Hello everyone ! I am changing out my rear end and need help identifing the technical name for the bushings that sit above the pumpkin cover. My local parts stores don't seem to have them or can't identify them correctly.

Secondly I'm trying to identify the gear ration on the replacement rear end. The only stamp available is 9795082 and E289. Rear end is out of a 70 Pontiac Grand Prix. Any help would be greatly appreciated.

Thanks
sfgreen