Thanks Von. This is a 81 450 with a 89 gsxr750 front end, a GS 500 swingarm and suspension parts with a 92 gsxr600 shock, early gsxr 750 rear wheel. Motor is a 555cc 11.1 comp JE pistons,.380 lift Megacycle cams,HD valve springs,APE heavy duty studs & head nuts.83 GR 650 head(big valves), 37MM CR Keihin carbs. Yamaha TZ 50 fairing,'08 vintage 6lt national champion.