Hell yeah man those shifter karts are badass! Have you ever driven one? I have and holy hell that shit was fun. The one I drove had a CR125 motor in it. But some have 250's and even bigger i'm sure. I thought about getting my daughters into it and even took them to a few races. But the parents at these events are crazy haha they had full size semi truck toy haulers loaded down like a nascar pitcrew lol Tons of money invested and I couldn't really compete. Yeah I know one badass kart and driver is all it takes haha till you blow a motor.