duster setup?

Thanks for the replies.

I've heard about this .509 mopar performance cam mguner is talking about, and have seen the dyno thread by iq52. There's a set of 440 source heads i can get a hold of that have around the same flow, and chamber size as the 516 castings he used. Now would that be a good combo for some moderate cruising around town and get me to my goal, With some better gears, converter, and a set of tires. Also can the 8 1/4 hold up to the abuse.