Generation IV External Engine - ls7 header?

What's a good size header for ls7 with blacklable heads? What header brands for ls7 are most popular.

American Racing Headers, 1 7/8" primaries with D shaped head ports, 3" secondaries with merge collectors. Good fit, American made, you won't find better.

American Racing Headers, 1 7/8" primaries with D shaped head ports, 3" secondaries with merge collectors. Good fit, American made, you won't find better.

I'd have to 2nd that! If you want some more info on the system PM me your number and I'll be glad to go over you set up with you.

Anthony
ARH
631.608.1986

A standard header wont work??

A standard header wont work??

it will. mine does no problem.

thanks guys let me look a bit more into it a ill get back to you.

What about the kooks 2" primary ones and 3.5" collector?

What about the kooks 2" primary ones and 3.5" collector?

Thats what i bought.