Which heads wpuld be better?

New to it all? No problem. Lots of good fellas here.

I like the early X, J or O heads with a set of 2.02-1.60 valves.
In stock form, they should be able to run the time. If there in need of work when you get them, a set off stainless steel valves with at least a 3 angle valve seat cut. Some pocket porting should be all thats needed and for surely put you in the 12's with less cam than stock heads.
3.91 should be a lot better for the cruise. 4.30's would be my personal choice. The 4.56 would need a tall tire. Probably around 28 inchs high. And need a lose converter to get max bennifit from the combo.
I think you'll end up with a great looking rake with that set up. (Tall tire)
Build a zero decked engine or close to it to run pump gas with the open chambered head.