Anyone ever run Speedmaster Heads on their small blocks

Certainly better than 302's which was no surprise, a little better on the intake, but lacking on the exhaust compared to EQ's. As long as the valve job checks out good I'll be doing some mild work in the garage on these. And as to the Chinese parts and such? I gave up. I'm getting old, tired of being pissed off, bickering, debating and fighting over ****, and trying to source USA made when it comes to many things I tried in earlier days. I tried to do my part. The writing was on the walls years ago when brake parts went China made.