my old combo was 493. 10.5-1, 590 mp cam. edel heads, tunnel ram w/six pack. 2" headers. 3" full exhaust. 4000 stall, 4.10s. ran 10.50s at 125 at 3800lbs. i shifted at 5800

if i was you, i would do the 337 intake and port the roof of either stealths or rpm heads to match intake. put the biggest 4150 carb on it. a 1050 quickfuel maybe. i would think about a hydrolic roller cam