Wanted 72 Nova Upper Control Arm Bumper New or Used GM Part Number 3858017

[RALLY]

Looking for a original 72 Nova factory Upper Control Arm Bumper GM number 3858017 used or new. GM used the push in style rubber bumper and the threaded stud style the used a washer and nut to tighten down. My 72 Nova SS came with the thread style style. Original part number still on both original rubber bumpers, but drivers side was cracked and fell off at one point in its life. My 72 Nova assembly manual shows pictures of both, push on and threaded style with washer and nut which i have. Anybody have used upper control arms laying around that might have the style i need? Do not want any aftermarket rubber bumpers, has to be correct 3858017 GM. You can see the GM part number molded in the top of the rubber bumper next to the threaded stud.