Mainly the exhaust system, (use 8mm X 1.25 helicoils in stock exhaust bolt holes) and reuse the SN electrics and front cover.
All else will work.
Use a high compression ADA head w 38cc domes and a low pitch impeller, like a Skat Trak 12-16 with the aluminum 701 nozzle off any year '95-'07. If you have the 650 plastic pump nozzle, ditch it for the 701 nozzle.