serious head issues, need input please

Did you put them on the motor straight out of the box? I've heard that INDY quality is not to be trusted out of the box and to have a good experienced machine shop inspect them prior to installing. This usually ends up in a lot of correction being made.

My cousin had a pair of iron INDY 440-1's or something like that (not sure of p#) on his 452 in his Duster. Kept dropping guides and seizing valves in em. Had to have em worked on a good bit. But that was 10-12yrs ago.
He found out the hard way.