This is one (1) 2" ID Heavy Duty Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is one (1) 2" to 2.5" Heavy Duty Reducer Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is one (1) 2" to 3" Heavy Duty Reducer Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is one (1) 2.5" ID Heavy Duty Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is one (1) 2.5" to 3" Heavy Duty Reducer Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is a GN1Performance "200R4 BUILT TRANSMISSION READY TO GO" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.  Built with a shift kit, extra clutch pack and hardened shaft. This transmission also features a billet aluminum super servo, 2nd gear anchor pin, and a 1 year warranty. This transmission will hold up to 650 hp. 

Warranty will only be applied to customers who are running a new torque converter when installing the transmission.  

Note the Built transmission alone is $2,195 and the freight is $335. The price you pay shipped to your door is $2,530. Once you purchase this item there will be no shipping charge in the following shopping cart pages. 

Please allow up to 3 weeks for delivery 

This is a GN1Performance "3 INCH 46mm EXTERNAL WASTEGATE DOWN PIPE " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch External Wastegate Down Pipe is constructed out of 304 stainless steel and comes with a V Band 46mm custom wastegate. All tig welds and is built to clear headers. Please keep in mind that when ordering any external wastegate down pipe a boost controller is need to allow it to function properly and avoid any damage. 

• Note- This pipe REQUIRES an aftermarket Boost Controller 
• This item will not work on a lowered vehicle due to contact with the upper control arm.

This is a GN1Performance "3 INCH 46mm EXTERNAL WASTEGATE DOWN PIPE and BOOST CONTROLLER COMBO " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch External Wastegate Down Pipe is constructed out of 304 stainless steel and comes with a 46mm custom wastegate. All tig welds and is built to clear headers. The boost controller comes complete with all the hardware needed to install it..

• This item will not work on a lowered vehicle due to contact with the upper control arm.

This is a GN1Performance "3 INCH INTERNAL WASTEGATE DOWN PIPE " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Internal Wastegate Downpipe is designed to work with your factory turbo and factory wastegate actuator! This Product is constructed out of 304 stainless steel and is all tig welded, built to clear most headers (Our SE Headers).

Installation is simple, remove your original 2.5" Downpipe and remove the cast iron elbow on the exhaust side of the turbo. Leave the actuator on the turbo and bolt the new pipe on!

A new test pipe or cutout will be necessary to adapt the new Downpipe to your exhaust.

This is one (1) 3" ID Heavy Duty Silicone hose that is 5" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is one (1) 3" ID Heavy Duty Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is one (1) 3" to 3.5" Heavy Duty Reducer Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is one (1) 3" to 4" Heavy Duty Reducer Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is a GN1Performance "3.5 INCH INCH FLAT FLANGE DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is our all new 3.5" Inch Flate Flange Downpipe constructed out of 304 stainless steel. All tig welds and is built to clear headers. 

• Note- This pipe REQUIRES an aftermarket Boost Controller 
• This item will not work on a lowered vehicle due to contact with the upper control arm.

This is a GN1Performance "3.5 INCH V-BAND DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is our all new 3.5" Inch V-Band Flange Downpipe constructed out of 304 stainless steel. All tig welds and is built to clear headers.  

• Note- This pipe REQUIRES an aftermarket Boost Controller 
• This item will not work on a lowered vehicle due to contact with the upper control arm.

This is a GN1Performance "3.5 INCH EXTERNAL WASTEGATE DOWN PIPE WITH A V-Band 46mm WASTEGATE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.This is our all new 3.5" Inch External wastegate Downpipe constructed out of 304 stainless steel. It comes complete with a brand new V-Band 46mm wastegate, bolts, and gaskets. All tig welds and is built to clear headers. Please keep in mind that when ordering any external wastegate down pipe a boost controller is need to allow it to function properly and avoid any damage.

• Note- This pipe REQUIRES an aftermarket Boost Controller 
• This item will not work on a lowered vehicle due to contact with the upper control arm.

This is one (1) 3.5" ID Heavy Duty Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is one (1) 3.5" to 4" Heavy Duty Reducer Silicone hose that is 3" in length. 

* Please note this is for ONE hose only. If you would like more than one you would adjust the quantity in your shopping cart.

This is a GN1Performance "  NEW MODEL 3" Cat Back Dual Exhaust System" for a 1986 or 1987 Buick Grand National, T Type, or Turbo T 3.8 liter turbo V6. This 3 inch exhaust kit comes complete with custom mufflers, mild steel U-Bolt clamps, and hangers which is everything you need to bolt this kit on your car today! This kit is a direct "bolt in" no welding or cutting is needed! The system is constructed out of 304 stainless steel and features a high polish finish.

***This new and improved exhaust system which features relocated bolt on tailpipe hangers that mount to the existing frame holes. The factory slip in style is not used anymore, this kit is easier than ever to install.

 This is the baddest Exhaust system on the market for your Grand National and the price is unbeatable!