Yeah if you do get a lifan 125 get the 54x54 big valve head version. They're pretty good for the price, then you can get a high comp piston and do some porting and the thing will rip!!! All I know about Jap engines is they're unaccepted by my bank account!! Unless we're talking chainsaws then its echo all the way home, best jap engines ive ever seen or used!!!