64 Valiant 440 build

Heck yeah man! That sounds great! I have a question. And I'm not knockin your idea to use the RB motor at all.......I'm just curious, how much do you think using a low deck like a 383 or 400 based engine would have helped with the headers? Do you think maybe the tubes could have gone in unmodified? Or.......maybe even some type log manifolds might have fit? I wish I had half the talent to build headers like that.