You can have the heads milled there...thats not a biggie. But the rest is more art than machine work. Or its more specific type machine work to heads. Like a specific machine for doing valve jobs. To use a CNC machine to do porting requires first a very skilled porter to do it by hand...get good results with a port they like...then transfer that info digitally inot the CNC machine. Then the CNC machine cranks out exact copies at a higher rate of speed. But you cant just put heads in a CNC machine and have it port heads. Youd be better off doing it yourself.

Dont let anyone other than a proven shop touch the LS6 heads. Futral, TEA, CNC thats about the only places i would go.