Rocker Stands For Magnum Valve Train??

who drilled and tapped the heads for larger studs?

Bobby at BJR drilled and tapped them.........

Forgot to mention that my set up uses Guide Plates and Girdles. They were taken off during this test because the adjusting push rod I have is TOO thick and would not fit in the Guide Plate. I made sure the roller was lined up on the valve during this process.