I picked up a pair of NOS side mounts on Ebay also. However, you need to be aware that 61’s are different from 62’s, both the PN, appearance, and I believe the fit. I haven’t tried the ones I got, they are 61’s, but in communicating on a thread on Classic Olds Forum with another member who was fitting the 61’s to a 62 car it appeared that while they did “fit” they did not fit as the original mounts on the 62 did. I think they did not seem to fully seat or something. They also have a different appearance with a “jagged” top on the rubber mount vs. the smooth top on the 62 mounts.