One of the "fun" things about getting old is forgetting what you bought a few months back, and you buy a second one...
Did that a year or two ago when I was doing some powertrain changes in my car. This is the duplicate transmission mount I bought. I had it bolted to one of the Muncies and when I went to put in the other Muncie I noticed I'd already bolted a mount to it months earlier in preparation for the swap. So............it's brand new but it's been bolted to the transmission.
It seemed to me I had paid about 12 bucks for it but Amazon.ca says $17.27 Canadian for the same mount. Regardless, I was thinking 5 bucks for it?
It fits many years in the 60's. If you want it but aren't sure if it's the one for your car just ask and I can look it up. I do know it's correct for all 66 Chev/Canadian Pontiacs except for TH400.