I just bought a used go-cart that I thought would be fun for my granddaughters ages 10 and 13. I believe this cart is a trailmaster, I do not know much about go-karts so I am unsure about how to go about rebuilding it. It came with another go kart frame, bolted on the rear end. It had a Kawasaki 8 hp flathead with a torque converter to a jack shaft to the main drive sprocket. I would prefer, when rebuilding this, to eliminate the need of a jack shaft. I would like the torque converter to direct drive the axle. Being that all small engines I know of have counter clockwise rotation, I would have to move the axle sprocket to the opposite side and directly drive it off the torque converter. Also, since these are young girls, I would want to use an electric start engine. I am unaware of what hp range I should be looking at to drive this kart. The Kawasaki that came with it is a pull start and I feel that would be too much for the little girls.