More HP on 273 Stock 63 Dart GT Vert?

This is my set-up on my 64 Dart vert.

.030 273
Comp Cam grind to E4 Isky cam specs
920 heads with 1.82 stainless intake valves, 1.60 stainless exhaust
D4B intake with Carter 625 cfm carb
MP Electronic Ignition
hipo 273 single exhaust into 2 chamber flowmaster and stock Hipo resonator.

What size wheels you have on there, Dart4forte?