[DanEC]

Thats about where I ended up with my mild 459 ci build with old HP, 9.1 CR iron heads. I had a couple less HP (my early HP, ported, polished heads can't match modern alum heads) and a little more torque (probably due to my LR dual quad intake). Where was your peak HP? Mine was around 5400 rpm. Should be a nice driving motor.