[MOTORHEAD]

If I was going the same route as you, I would pull the heads and check the cyl walls for damage and wear (ring ridge at top) NO wait !! before pulling the heads, put starter and flywheel back on it and the valve train parts and cam gear and chain and do a cold cranking compression check on it. if they check ok, then do your mods, heads, cam and intake should give you plenty power, and all new stuff will fit the new block.