ProComp/Speedmaster aluminum heads

I can get a good deal on bare ones that are CNC ported. So buy most everyone’s postings seems like I should get them. Is the S/M Procomp valves any good. What about springs etc. Kim
I think the springs would be ok for a hyd cam.. wouldn't trust them for anything too wild.
As far as valves, They seem ok, look and measure identical to the edelbrock valve I bought as a replacement.