1997 GMC Sierra flowmaster super 40 exhaust
5.7 vortec, true duals, factory cats still on, dual in dual out muffler. 2-1/4 piping with 3inch tips. Hope this helps!
97 gmc sierra 5.7L with FLOWMASTER 40's burnout
My cousin burlin the tires on his 97 5.7 4x4 sierra getting some sideways action
Vortec 5.7 no cats Flowmaster 50
98 K1500 5.7 Vortec. No Cats, factory 2" pipe to di/so Flowmaster 50 SUV, Single 3" tailpipe with a modified Escalade/Denali Tip (The Center Pipe Removed). Cold Start Couple Revs.
1998 Chevrolet Pickup Cat-Back System - Magnaflow dual in-dual out muffler
98 Chevy 5.7L 4x4 with a cat-back system. Magaflow muffer