Vibrant Performance Exhaust Manifold Flange GM LS1/LS2/LS3/LS6 SFI Socks All you need to do

All you need to do is drop it in the engine

On the street

and they offer replacement/upgrade components for a number of popular vehicle applications

Dynamometer Specs:

1983-1987 Mercury Cougar

Vibrant Performance Exhaust Manifold Flange GM LS1/LS2/LS3/LS6 SFI Socks All you need to doVibrant Performance flanges are made from your choice of high quality 304 Stainless Steel or HRPO Mild Steel, ideal for any forced induction or naturally aspirated application. Vibrant flanges are laser cut for a precise fitment. GM LS1 LS2 LS3 LS6 LS9 motorsVibrant Performance was established in 1997 to design and produce Exhaust and Induction components for the Sport Compact performance market, which, at the time, was a small but rapidly emerging