72 Swinger engine swap: power per dollar?

Hell want different heads though. While its nice to have the roller, these smog heads are next to worthless IMO. Spend the money and put rollers on a mid 70's or older engine
I was under the impression older LA heads (My 2.02 Valve J heads) could be used on an LA Roller Block. Guess I need to do more homework then :oops: