Hello, a guy just gave my a mojave. I think it is a 88 or 87, on the frame it says klf110b. The motor is off and was under 2.5 feet of snow. I pulled the head off and the exaust valve is broke and laying on the piston. I can not get the piston broke loose from the cylender either. But any way I was wondering where I can get a 250 moter that would beable to "bolt" up to the frame. Even if it is blowen as long as it is complete and fixable / no busted cases. Your help is greatly appresheated, Thanks.