The left side mount should be ok as it's shorter length decreases leverage as it is pulled up. Right is in compression and longer for a more stable set-up (if you have movement in the motor mounts). I use solid motor mounts to control rotational movement in the driveline and a flexable trans mount to absorb some movement vertically. The different heights of the trans pads have no effect in my setup since movement is up/down.
So, I guess the tail housing is a custom piece, what about the internals? straight cut gears/dog clutches? I run this one with a mag tail housing with a 350 hp 302 in a 2100# car
JT5 Enduro 5 Speed