I checked out one of the heads I have here. The Engine Pro part# is PFS191202-2A. The part# is a tag that is suprimposed over another part# tag that reads (in part)C3002S>
The heads don't look bad. The valve job itself is among the best I have seen on aftermarket heads. The head I checked is warped .012", not unlike other aftermarket heads I have seen. The spark plug holes are washer-seat, with a 7/16" reach. They are unported, need bowl and port matching and clean-up.
That's all I have on them.