It was a Superflow. I checked it once against my bench and the msd bench was showing alot more flow then the sf using the same head and test pressure. MSD bench was +20 cfm
I kept forgetting to make a calibration plate to check it on the sf. ( kicking myself for that one)
My major regret is that I should have taken my orifice plate out of the msd bench copy and checked it on the sf bench. Unfortunatly lazyness kept falling into play so i never disassembled the msd bench to verify.( really kicking myself for that one)