O.S. VZR
Dag32, I see you are in SoCal. What do you race currently and where?
I have the OS VZR and have had no problems. I run at Crystal Park and find my motor to run very well compared to the others. With a few gallons through mine, I am still on the same original rod. I purchased a new rod, but have not installed it yet. With a good setup and clean driving, you will have plenty of power with the OS.