You have to be INSANE to have long-tube headers on a big-block A-body Mopar!

Have you considered dropping the K-frame instead of taking the front suspension apart a piece at a time? I put my (B-body) headers IN on my low-deck Dart before raising the K-frame up. Amazing how much room there is with the steering box, torsion bars and the whole rest of the front end removed.
Would be interested to know what exact set of headers you got to fit in? I’m going to be doing the same thing this winter on my 69 notch 383 4spd