I measured the holes and they are identical spacing on the rubber covers and I cannot see any difference in the end curvatures??? The hoops don't have part numbers I can't find, was concerned that they may have an orientation issue. Now these were taken off the car about 20 years ago so I guess I'll have to take the bumper and see how lines up to determine the fits. But Thanks!The hoop, the cover and the rubber block are all ‘handed’ meaning they are unique left vs. right. I would have thought the cover and hoop were identical.