two guys here in sa have them both of them have been converted to a normal engine setup (no reverse) they are a good bike imo, the stock engines are crap yes!!, but the frame it self is very good!!!, i have a genuine grc rsr and one of our juinors (blata boy) has ridden both my rsr and his dad gp3 he sed he loved both only real big difference was the brakes and foot peg's all stuff that can be changed hope this is useful sumed up id say they are worth the money but need engineering to make them work
