Brainstormin' 440 vs 5.9 ...

73 3/4 ton 2WD 4.10 Dana open with a 360 2-bbl in a 4500 vehicle ran 17.05 @ 79.95mph. only addition was 70 340 exhaust manifolds and Dart head pipes with turbo mufflers. and the air cleaner lid was flipped:)
also, 9.50 16.5's, 28 or 30" in diameter?
with a PC rebuild kit, Crane 427/454 cam and kit, Hedman headers w/dual exhaust, it would shift into third at 75mph, according to the speedo. still the stock 2-bbl and cast iron intake.
so with cam and headers, the 440 should be in the lo 16's IMO