Slant 6 Aluminum Performance Head
There's plenty of cores out there, for someone to be able to recondition and CNC port, then sell as a recond. "HP" head.
Depends on price, would sure welcome it, vs all the chips I made doing up 2 slant heads..... (Then I still had to hand them off to a machine shop for the finish work like the actual "valve job," and shave) CNC would be faster, reproducible on many heads and programmable to port out as far as possible without grinding into a water jacket. (Cuz I'm sure I'm not the only one that has seen those pix of the band sawed head and all the thin "danger spots" as cast)