Only the 650 motor will fit, the frame isn't even wide enough for the 1000 motor. I'll buy the bike for what you owe on it though. I've been wanting another 650S for a track bike. Your only option with the SV frame is to go back with the original motor type or sell it. There are some big bore kits available for them if you want to rebuild the motor. I've looked in to a few for my 04 as well.