This is a ls6 manifold, check the casting numbers. The intake manifold is a upgrade to any 1997-2000 corvette with the ls1 manifold.It features a bigger plenum volume and bigger runner volume. The casting part # is 12561182 on the manifold. It is good for 8-12 rwhp. I also am throwing in a vararam velocity stack. It fits into the throttle body and promotes smoother air flow. it fits various corvettes, firebirds and camaros. i have more pics if interested email me at lyzenmtt@schaeffler.com Any questions call Mat at 216-362-7027. please do not call after 9:00 i have small children
