i agree with sheepdog, i built a cart years ago with a dirt bike engine on it (125cc) and that thing had all kinds of torque and power. i've mentioned in other threads that if hammerhead or others would make a buggy with bike style power plant......man, i would be all over it. imagine the low end on that sucker....endless!! you could climb trees with it! i would like a set-up like a 400cc quad (with a clutch pack) but in a buggy cage.