MotoGP God
Posts: 18,275
Join Date: Apr 2002
Location: Oxford
Mood: Its ONLY a Bike Club
You probaly could put the 620 engine in the 583 chassis but you would have to gut the lower brace bar just as you would to fit shorter inlet tracts. Not sure what total cost will be Jim at Bike Enders had a 5 speed engine with some damage for £375