i am in need of a collar for a mopar 8 3/4 axle bearing, the part that is press fit to hold the bearing to the shaft. i have new bearings and every thing else i need. i am unable to locate just the collar. does it exist just by itself. i hate to have to buy another set of bearings just to get the collar. yes i have checked local auto parts stores, as well as several online sources. if anyone has a source or a part number i would appreciate it.