How much (or little) porting was done to the intake and heads?
I was dead on with the torque curve, just thought/expected it would pull a bit (~20)more HP up top....especially with a six pack.

I've seen 520 lb-ft/460+ hp results on stockish 440 builds using an OOTB Crower 271HDP cam, ported intake and just a 2.14 valve with some short side tweaks. I did use '915 (closed chamber 67 castings) heads though. That was on a stock bottom end with just shortened pressed pins (saves about 50 grams a slug) and 'flipped' 2355 TRW slugs.