Wow, nice numbers!
The way that differential mount is designed, it [the transmission mount] will only seperate if you give it quite a bit of throttle in reverse. But, with those torque numbers, it's going to be a pain to be carefull With the poly mount, even if it seperates, it will not fall down onto your sway bar again. You'll see what I mean when you get it and see how it's designed.
!M!