I have a CBR 929rr and i am looking to change out the engine. I have been told that I can put in a 954rr,but my question is can this really be done and if it can will I have to do major changes with the wiring and ECM. Will this engine mach up at all with out doing major changes to the bike as a whole? Also I am looking for a 929rr engine or a 954rr engine if I can do the change with out major problems. Does anyone out there have any knowledge on this change or have any idea were i can get a good used engine?