96-99 GSX-R 750 engine, it will bolt right in. The 2000 model was the last year for that type of frame for the 600. Also need wiring harness 98-99, ecu 98-99, top end of 750 FI 98-99, airbox, fuel pump 98-99, sprockets, chain. Hmmm that's all I could think right now. Oh ya don't forget the gauge cluster 98-99. It has FI light indicator, it will flash if you have problems with your FI. GL to you and have fun.....I have a 2000 gsxr 600 that I want to swap the engine in. I was wondering if anyone knew what the newest, largest displacement, fuel-injected engine I could put in without too many modifications was.