ProComp/Speedmaster aluminum heads

I called Speedmaster a few hours ago and inquired on the CNC Small block heads with no valves or Springs.
One thing first off is I've gotten what I believe was the same person and pretty quickly. The guy said they didn't have any bear CNC heads right now, but had 40 sets at the CNC machine shop. Said it would be about 3 weeks. I'll be interested to call in three or four weeks and see where they're at. With that said I am definitely giving these a serious consideration....
Are you replacing the camshaft, something with more lift.