Please tell me the best fit small block headers.

all of the mags at one point did a comparison to HP manifolds and headers, difference was marginal on a mild build. I have 68-70 manis on the 340 you sold me. I had them cleaned up a bit to make sure the matched the heads, so far they work fine. Nice looking headers have some curb appeal I guess though. I thought that motor was supposed to be stealthy.