I'm working on a 70 that I bought with a 90cc electric start engine that says "colors" on the stator cover and the engine is gold. Has anyone seen one of these? I need to find the wiring diagram for it because the wires are different colors than the lifan.

Also, in a box of parts that came with it is one of these:
http://www.pccmotor.com/innerrotorkit.html

anyone using thse on the atc 70's? I understand they are for pit bikes and make the engine rev faster.

I had the inner rotor on my pit bike, you lose any ability to "lug" the motor. I think on a 3 wheeler you kind of need the heavy flywheel so your not doing a ton of clutch work. Just my opinion.