yes they will work fine & the pistons are in the hole far enough that a potential V/P contact ain't a worry. You would need to CC or guestimate the CC's & see how far in the hole the piston(s) are when you pull the heads. Actual CR is in the 7's right now. I would install the heads/change the timing set & adv it 4 deg & dial in the dist subsystems.
Thanks for the feedback, that is about inline with what I was hoping. When I get the heads off I'll measure the P/V clearance then pick out a cam. I have a Performer RPM intake that is milled to match those heads, ought to be a good upgrade!