My version is similar;
Eddys or EZs (porting by Modern optional) I use the Eddys ported by Modern
10.5 CR +/- (I have about 10.9 CR)
At least 950cfm carb
Any number of good rocker choices
Dwayne Porter or Scott Brown for the cam (I use Scott)

Depending on the final combo, 600+ Hp on pump gas is easily attainable. With a Dominator, my 499" makes 520RWHP on pump gas.

Just be sure to leave some budget for tires.

Master, again and still