Maximum Performance N/A 383 build. Input wanted from engine gurus.

Worked iron heads that flow that well will probably cost more than trickflows.
What you have is tricky. 600 hp however shouldn't be super hard to do with what you have.
I bet a low gear set in the 727 would really help you get that charger moving
I believe that cam is for a very light car, you'd probably need more gear and more converter to make it all work together, something more around 6000 rpm converter flash.