KB4 Stainless Steel Headers with Wastegate and Blow Off This is a set of GN1Performance "KB 4 HEADERS with 46mm Wastegate, Blow Off Tube, and Boost Controller Combo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Included in this kit is a custom welded passenger side... MSRP: Was: Now: $1,149.00 Choose Options
SE Headers This is a set of GN1Performance "SE HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.They feature HUGE ports. These headers are only available in none polished raw stainless finish. They are complete... MSRP: Was: Now: $949.00 Choose Options
KB4 4 Bolt Stainless Steel Headers This is a set of GN1Performance "KB-4 HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.The difference between these and the regular "KB Headers" is a 4 bolt flange rather than a 3 bolt. They... MSRP: Was: Now: $999.00 Choose Options
KB3 Stainless Steel Headers with Wastegate and Blow Off This is a set of GN1Performance "KB HEADERS with 46mm Wastegate, Blow Off Tube, and Boost Controller Combo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Included in this kit is a custom welded passenger... MSRP: Was: Now: $1,149.00 Choose Options
KB3 Stainless Steel Headers This is a set of GN1Performance "KB HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.They feature HUGE ports and are welded all the way around each tube! These headers are only available in none... MSRP: Was: Now: $999.00 Choose Options
