The late model TR3650 ('05-'10) that I chose has a unique rear mount. Instead of two bolt holes it has one in the center (first picture below). You can see the one on the left (same model as mine) is quite different with the center mount. For this reason I had to come up with a way to modify the transmission mount. With the help of my buddy Kevin we borrowed the ring off the stock trans mount to slide over the center placed bolt hole.
Side by side comparison of TR3650 transmissions. The one on the left is the '05-'10 model that I used.
Here is the transmission mounted.
This is the aftermarket mount I used. We tack welded the ring on the upper mount bar (top of picture). This ring came off the stock rubber mount. We then drilled a hole big enough for the cap of the bolt to fit into the rubber. This way the bolt is sandwiched between the rubber and the top cross bar. I then bolted the center screw (with the top cross bar) to the transmission. Finally I bolted the two cross bars together.