I'm just now putting together my first China 2-stroke and am interested in what I can do with about $600. I'd like a shift kit (will these work on a frame-mounted 2-stroke?) and improved engine reliability. If I'm not going to be able to rely much on a China 2-stroke, I'd like to upgrade the engine as well. But if I can get away with the current engine, that'd be awesome. Also, can anyone point me toward specific improvements I can make that will improve reliability/performance? I've been reading the forum but any extra tips are appreciated. I'm not mechanical but I'm willing to learn. And if anyone's in the Midwest and wants to teach in person... One last thing: what's the cheapest braking solution? Currently I have no brakes.