TTi step vs. 340 manifolds

340sFastback said
And if you swap to headers and you have stock exhaust tips if they are anything like what was on my '69 they choke like 1 1/2" inner diameter which is not going to flow what so ever.

I take a chopsaw, and buck the tapered inlet off at a size that fits over my tailpipe, and weld a suitably sized new inlet onto the "tip" .