Stumbled along this video on YouTube...about bolting on OOTB heads...

Boy I tell you whut, I didn't have no gawl dern problems wit mah RHS Inday X ouda tha bowx heds, nawim sayin!

Didn't hone the valve guides, but I lapped my own valves in... Got lucky, could have turned into "a bucket of sh8t"... Good information.