Slant Six Solid Roller Camshaft

Yep, that would have been a great head, for a turbo car. You were not necessarily making a hard choice when you sold it.
Ask him to do the intake first, then work the exhaust to where it should be. Unlike a sb head where it's easier to get ahead of the exh, the slant is the other way around. The exh does exceedingly better than you would expect.