Another change has taken place, I have confirmed the cc of the combustion chambers on my existing Victor Jr's as 60cc but have decided to upgrade to a better head for the 8.5 class I want to run. So I am putting my Victor Jr's up for sale, if interested let me know. So I have changed transmissions, cylinder heads and how much I was going to spend on this. Man I sure hope I don't have to keep changing my mind.