heres the site where i found out about and the (how too) on eletrosis.
http://www.650rider.com/Content/pid=6.html
I was considering a few diffrent swaps. Blaster, yz85/80, 250f ect...
Was looking for 1. 12volt 2. Desent power 3. something diffrent (not claiming to be the first) 4. a motor with an aftermarket. Iv got $150 into the motor/swap/rebuild. So far i think im doing well. Went from 5hp(if i was lucky) to 20(ish).
Im working on NSR 3 spokes/swingarm/brakes. Just need my buddy to get his NSF 6 spokes for is zb50.
Stay tuned!