cast iron heads vs aluminum for stroked 340

I like it, 550 hp in an early A-body for the street. Buzzmc, I see that you live in Campbell. I'm over by Santana Row. Let me know if you'd like to go for a ride in a '68 convertible Barracuda with somewhere just south of 500hp via a stroked, Eddie-headed, 5.9 Magnum based motor so you can get a feel for how mild mannered yet capable that level of performance build is on the street.

ps: Neither one of my Mopars are safe to drive without quality DOT drag radials out back. The DOT drag radial technology makes such a huge difference in traction, streetability and safety that it's hard to believe unless you experience the car with and without them. Plus, Nitto's drag radials are high speed rated at nearly 186mph if memory serves. My front radial tires are only rated to 147 mph.