These Headers came off my 59 ElCamino when it had a big block. Hooker super competition with 2 inch primaries. They are a bit banged up as used headers tend to be, Definitely not for a lowered car. bottom is d shaped, and collecters are scraped and will need a little cleanup to seal properly. They were fine when I pulled the engine(went small block) comes with 2 1/2 inch head pipes to get exhaust under frame. I am up in the hills east of Highway 101 near San Jose. Come get them, not going to ship.