I haven't seen them, didn't get to see them running on his engine, and milling heads to gain compression wouldn't be my first thought. I don't know what he wants for them, I don't think it's that much, but I can ask. Shipping would be pretty dear, they aren't light!

Edit: I gave him a call and discussed; it sounds flaky to me, I should have checked them out before mentioning it. He cut the heads 0.100", that's just not good practice.