Ummm... I am pretty sure that the great state of Kalifornia will not allow a 02 fx470 to LEGALLY ride on our wonderfully smooth paved roads.... I would think that you would be better of as well to go and find a used DRZ or similar, they can be had fairly inexpensivly and with the money you will spend converting the FX and then the money spent fixing the top end when it gernades on you... you would be money ahead.
.......... Off-highway motorcycles must have an emission label affixed to the vehicle indicating certification by the manufacturer for on-highway use when converting to on-highway or dual registration........