I won’t make you wait till the next video. They are Speed Tech branded but are made for them by Stainless Works. Mid-length, 1-7/8 primaries, 3” collectors. Very pleased with the quality though they are pricey. I went with them because of the tight clearance between the block and the frame rail on the Extreme subframe. Speed Tech will not tell you if any other headers would work. Since they are pretty tightly packaged they “should” work on most other Gen 2/LS applications.
What make brand size headers are you running. Have a 71 doing Ls3 swap can you suggest anything.
I won’t make you wait till the next video. They are Speed Tech branded but are made for them by Stainless Works. Mid-length, 1-7/8 primaries, 3” collectors. Very pleased with the quality though they are pricey. I went with them because of the tight clearance between the block and the frame rail on the Extreme subframe. Speed Tech will not tell you if any other headers would work. Since they are pretty tightly packaged they “should” work on most other Gen 2/LS applications.