I may have misunderstood the question, and maybe the design is very different for 1956, but this is what I did, 3 years ago, for my 1950 New Yorker (99000 mile 2 dr htp). The old rubber was cracked, worn and the centre holes had been enlarged by sidewise pressure from the mounting bolts as the body moved relative to the frame over 48 years of driving. I went to a rubber specialist. They had hundreds of different dies for cutting rubber, including many circles of differing diameters, and, of course, sheets and sheets of rubber of various thicknesses. Taking my old and cracked rubber with me, I chose an appropriate die and some thick, dense, heavy duty rubber. Actually, it may not have even been 'rubber' - could have been some other compound. At home, I drilled holes through them and fitted new zinc plated bolts, washers and nuts. With the mounting bolts went through the outriggers and into the car body, I fitted new rubber to both ends of the bolts. Richard. ***************** Having some work done on my 56B and found that the rear body mounts are almost completely rusted up. I'm assuming that you don't get parts for these, just make something that will work? I know it won't be original, but seems like the odds of finding "good" ones would be pretty slim. True or not? Mine in an Ohio car with 120,000 miles on it, so I don't think being original is vital at this point. Just trying to keep it on the road, but if good mounts are out there, or there are other ideas I'd love to hear about them.