This is an all new GN1Performance 3.5" Exhaust Cut Out for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel.

This is a GN1Performance "3.5 INCH EXTERNAL WASTEGATE DOWN PIPE WITH A 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 ...

This is a GN1Performance "3 INCH FLAT FLANGE DOWN PIPE WITH NO WASTEGATE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Down Pipe with a Flat Flange and no wastegate provision is constructed out of

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 ...

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 ...

This is a GN1Performance "3 INCH FLAT FLANGE DOWN PIPE WITH NO WASTEGATE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Down Pipe with a Flat Flange and no wastegate provision is constructed out of

This is a GN1Performance 3" Exhaust Cut Out for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel.

This is a GN1Performance "3" Cat Back Dual Exhaust System" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This kit comes complete with custom mufflers, clamps, and hangers which is everything you need to bolt ...

This is a GN1Performance 3" Exhaust Test Pipe for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel.

This is a "drop in replacement" GN1Performance "ALUMINIM HIGH FLOW 3 ROW RADIATOR" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This product not only looks great in the car, but also most importantly keeps ...

This all billet aluminum vacuum block is for any 1986-1987 Buick Grand National, T-Type, Turbo T, or GNX 3.8 liter turbo V6. This item replaces the stock cheap plastic piece and comes complete with 2 stud bolts and a gasket. This product ...

This is a GN1Performance "COLD AIR INTAKE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The kit includes a custom fabricated 3 inch aluminum pipe, K&N air filter, and our custom mass air flow pipe. Also ...

This is a GN1Performance "EXTREME FRONT MOUNT INTERCOOLER" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Its custom hand built aluminum front mount intercooler with the bar and plate core. This intercooler ...

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 polished ...

This is a GN1Performance "Engine Oil Cooler" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The kit includes a custom billet oil cooler adapter, 2 steel breaded lines, a brass oil filter adapter and the cooler ...

This all billet aluminum 72mm intake plenum is for any 1986-1987 Buick Grand National, T-Type, Turbo T, or GNX 3.8 liter turbo V6. With this plenum you will have a quicker throttle response and faster turbo spool up, not to mention it all ...

This is a GN1Performance "STOCK LOCATION POLISHED STRETCHED INTERCOOLER" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. It has 23 rows, this intercooler features a beautiful POLISHED finish and an adjustable air

This is a GN1Performance "4 PIECE BILLET ALUMINUM PULLEY SET" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. These pulleys are CNC machined with a high polished finish. The kit includeds the crank pulley, water ...

This is a GN1Performance "STOCK LOCATION STRETCHED INTERCOOLER" FULLY POLISHED for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. It has 23 rows, this intercooler features a beautiful finish and an adjustable air ...

This is a "STAINLESS STEEL HEATER CORE LINE" replacement for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6, which mounts up to the passenger side of the intake manifold. This is a perfect upgrade for those of you ...

This is a GN1Performance "Stock Replacement Up Pipe" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is a great upgrade from the factory steel throttle body up pipe. It is polished 2.5" aluminum pipe ...

This is a GN1Performance "STEEL 3.625 STROKER CRANK " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is a narrow journal width crank.

This is a "drop in replacement" SUPER EXTREME ALUMINIM HIGH FLOW 3 INCH 3 ROW RADIATOR" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This product not only looks great in the car, but also most importantly ...

This is a GN1Performance "SUPER EXTREME FRONT MOUNT INTERCOOLER" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.This SUPER EXTREME model is a custom hand built aluminum front mount intercooler that has a bar and ...

This all billet aluminum 72mm throttle body is for 1986-1987 Buick Grand National, T-Type, Turbo T, or GNX 3.8 liter turbo V6. With this throttle body you will have a quicker throttle response and faster turbo spool up, not to mention it all ...

This billet aluminum 72mm throttle body and upper plenum is for 1986-1987 Buick Grand National, T-Type, Turbo T, or GNX 3.8 liter turbo V6. With this throttle body you will have a quicker throttle response and faster turbo spool up, not to ...

This billet aluminum 72mm throttle body, upper plenum, and vacuum block combo is for 1986-1987 Buick Grand National, T-Type, Turbo T, or GNX 3.8 liter turbo V6. With this throttle body you will have a quicker throttle response and faster ...