ok, I'm thinking of getting some tti headers for my 67 300. It's a 440 TNT so it has the hipo manifolds. Probably do this next spring. I already have tti dual exhaust with H pipe and have been very happy with it. Anyone installed them??
I have them on my 71 New Yorker, they are a good fit. You may want to run a small starter for better clearance. If the joints ahead of the H pipe are in the same location for headers as it is for manifolds, you may be able to purchase that section and it could save having to fabricate it.