need major tourque out of a 302!(non efi)

[FoxBuilder]

LX,
Your going in the right direction. You will need a hardened gear for the distributor to work with the roller cam. Should be able to use the timing cover and fuel assembly, I would recommend a new fuel pump (Edelbrock). Milling the heads is a good I idea, I would try to bring the compression up to at least 10:1. The performer intake with a 600 carb should work well with the B303, would probably also use a single bore 1/2" spacer to help with some top end power. The 38" tires are going to look good but are going to kill low end torque. You'll have to whine that B303 up to get a good launch, even then it might bog.