A lot are. Some arent. I just helped my friend move his camaro, 430 stroker with Trick Flow 245cc cathedral port heads. Easy 650 horsepower with the FAST lsx intake. Probably would be over 700 if would talk himself into cutting the cowl and hood to clear a better intake. Grew up Mopar but gave up on it when he wanted to go faster and there was nothing availible reasonably priced.