How deep is the induction hardening on magnum heads

How deep is the induction hardening on magnum heads - can I do a valve job?

gregsdart said
The obvious fix is to buy EQ replacement heads, do it right, and when the truck dies, sell them!

I think I've had enough of the "do it right" preaching......pretty sure I've got a good handle on how to do things "right", was just asking for firsthand information so I can make an informed decision TO do it "right" instead of just guessing.