I have a 7 speed Schwinn Jaguar Cruiser with an 80cc motor kit installed. I am looking at purchasing the shift kit from Sickbikeparts, but I need to change the rear axle since it is made of the standard steel. Where is the best place to buy a replacement hub or axle for this particular bike. I have searched the Schwinn website and can not find the specs on the bike, so am not sure which hub assembly to purchase. I have been looking at the Shimano XT M775 CenterLock Rear Disc Hub from Outside Outfitters. Has anybody made this mod on this particular bike?