cast iron heads vs aluminum for stroked 340

headers are for later a-bodies, not the early 63-66. That's the rub.

And I already have a set of multi-thousand dollar custom headers, I don't want another. The fact is what's in the car was the best I could come up with at the time. The TTI's are definitely better, similarly length'd side to side, which what I have is absolutely not. The driver side header goes to the front of my car today and underneath steering/etc. The passenger side is made much like the TTI with the torsion bar going through the header.