big block b headers in a body?

Save yourself the hassle and the forever clearance issues. Spend many hundred less than TTI and buy Schumacher's Tri Y's. Top quality product, install with the engine in place, no smashing with a hammer, lots of room for the starter, fits great with power steering. First headers I've owned that didnt leak.
I have a buddy that runs them in his 74 Dart Swinger with 383 and power steering, and I have them in my 69 Barracuda with 440 and power steering. You will not be dissapointed.