I have a set of 69-72 BBO motor mounts, style #2328 left over from my project. Bought one from Rock Auto (Westar) and one off of eBay (Duralast) based on RA's recommendations of which style to buy. Oops, they were both wrong (I needed 2261, thanks Joe!). The mounting dimensions are the same, but the rubber protrusions on the back of them are slightly different. One has been bolted up to a motor, but since it wouldn't fit my car, I took it right off. Both for $10.00 plus shipping conus.