Surprised that someone calling for parts wouldn't have mentioned that along the way.
That's how we found out. People would call us and say "I just bought a pair of your CNC ported Stealth heads from Bob at Modern, I need to order head bolts, or gaskets (etc.) for them" Especially during times when we were out of stock of our heads. So it didn't take a rocket scientist to figure out what was going on.
