I would like to use the black slotted 21" wheel ( hd part # 44056-07)for the front of a new FLHX. This wheelneeds an install kit and is not supposed to fit, but I figure someone on this site knows what size front axle the FLHX has, what spacers will be needed to center the wheel and line up the brake rotor.I believe the install kit has bearings

thanks for any help