The porting is done. Dave has studied the head and says:
It has good potential. The quality of the casting is excellent. The ports, however, leave something to be desired for larger engines. For our purpose, a 404 CID engine, they're good. There's not much "room" for growth in the roof (Ram Air IV opening). The exhaust side, however, can be made to work nicely. 300 CFM @ .600" lift is doable (int). Much more than that would take some "doing".
Conclusion: Nice head, well made. Not as much performance potential, ultimately, as the KRE D-port. We've managed over 340 @ .600" with those.