Thanks Gordie,
I recently replaced both the front and rear mounts on my 47 Special with those from NAPA. After 69 years, the rubber on all of them was swollen to the point that it was not detectable if the fronts and rear mounts started out the same thickness, etc. If someone (maybe yourself) has both a front and rear mount that is not swollen, perhaps I can get a photo or detail drawing of the dimensional differences. I was able to use the same part on both the front and back, but since the part numbers are different, I am still wondering if that is the correct solution. In engineering terms, part numbers are changed when there are differences in "form", "fit", or "function". Nobody has defined these parts yet to my satisfaction. Please help! PS The car runs very well after being in storage for about 40 years. Still a good car with many memories.