W2's would be a bit more than I'd care to spend on this particular project. The other thing is I'd use the engine I already have, which is the '85 roller engine.
'85 roller engine has the 302 heads and the 9.2:1 cr flat top pistons. 040th down in the hole.
That stock roller cam runs out nice with a 4 bbl on it. If you are lucky that early roller will have the long snout cam with the eccentric on it for the mechanical fuel pump.