Rear Spare Tire Mount Attachment Direct to Body?

[dmengel]

I have a 30 Tudor sedan going back together after many years. Getting to the spare tire bracket that attaches to the rear of the body (this is not a side mount spare). Is there any kind of rubber or protective material that goes between the bracket and the body? Or does the bracket bolt directly to the sheet metal?

Just a bit concerned about scratching the paint.