Looking for a shock mount

I took one of my shock mounts off my '60 Starliner tonight after a lot of pain and suffering. It didn't really survive the ordeal and I barely made it out alive.

I'm looking for something that will replace it. If I can't find something similar, I'm sure a big bolt, some washers and a nut will do the job just fine.

The attaches image is basically what I need except the mounting stud needs to be about 3 inches long.

 

Any auto store aught to have them but I've seen sites like Mac's sell just the rubber part and that's what we all want. But, I don't remember the specific site.