Whitey I don't know this guy but just to give you something to think about:
I bought a used set of heads that I was able to put my hands on and look at closely. They were BBC Brodix BB2x with only 80 1/8th mile passes. Looked good to me and price wasn't bad. Well the springs were junk one bad valve and needed a valve job. I could've bought new bare castings put better valves and springs for the same money. Something to think about. Sorry so long winded.