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Product ID: 3.5DPW/FLATFLANGE
3.5" Down pipe with Flat Flange
3.5" Down pipe with Flat Flange
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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.
 
Would You Like to Add a Boost Controller? Yes (+$99.00)
No
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Price: $474.00

 
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