In searching for a HEMI, I came across a new shortblock, "Mega" block, 4.5" Callies billit crank, Manley H beam rods, Diamond coated pistons etc. It was a lot bigger than I wanted for a street car, (540 c.i.) but why not live a little? With a mild solid roller and stock Mopar aluminum heads it made 600ft. lb. of torque as soon as the dyno load was installed and 635 HP @ 5,900 rpm at peak.