Hey guys, I'm picking up a Sprite Fox Mini bike frame tomorrow. If I remember right it has everything but the engine. What kind of engine should I be looking for if I were to put it pack to original? Also, I'm working on a deal on a Sensation Mini Bike frame. It's ride-able as is. The guy just wants to get rid of it and might be selling the engine separately. How much would I be able to give reasonably for it? Like I saw it's ride-able but the gas tank will be going with the engine as its been replaced with one such unit. The frame has been welded a couple times but looks pretty straight. Need more pictures probably? Thanks!