55cc Autisa kit heavily ported, custom made header spigot mounted to the kit, which has the exhaust studs filled in and moved out to accommodate the wider header, intake heavily ported again intake studs filled in and moved to open the intake to 24mm, goes fast, off the line its not terribly quick, stock springs for now, maybe I'll upgrade them come spring. Puegot forks, tomo seat blahblahblah... Update: Engine rebuilt, stiffer clutch springs, still does like 48, so close, but better bottom end!