Bensid, I don't know what you a want to do with the Super Bronc, but 13 HP is RIDICULOUS!!! I have 2 1969 Heathkit Bonnie
Bikes, a cousin of your
bike. 5 HP is plenty. Even a 6.5 predator is plenty, which is on one of my bikes. I have fitted one with a torque converter, which gives me plenty of get up and go. Remember, that is a MINI
BIKE. Not a
motorcycle. I own a Buell XB9SX which is a very fast
motorcycle. It is designed and engineered to go fast. But that was not what mini bikes are designed for. These are designed for fun. Overpowering them can be dangerous. The thrill of riding is the journey, not the destination. You cant enjoy the scenery if everything is a blur. Just some free advice from some one riding for over 51 years. Have fun, be safe. Kroozer1