A friend at work offered me a Carter Competition 750 cfm carb for $150.00. He says it was only on the engine long enough for them to dyno it when they put it together. He had the motor built out-of-state and they made a video of it running before they sent it off. As soon as it got here he took it off ( I have no idea why). It sounds like a good deal, but don't know for sure....... Thanks guys.