I hope you are not running a 4.7 in the front case
. When I set up my cases, I used Sky's X member with an MC-07R10 and a 10 degree pie wedge I made from rectangular tubing to support the angle. I used one regular T-case support, you should be fine with one HD support. The running gear needs to be able to flex upon the rubber supports and if too many are used the torque from the low gears may eventually cause a breakage in a U-joint or mounting point. That is what those mounts are for; they allow the running gear to "float". One HD mount will be fine.
