Great point on the frame twist, wolfcub. THAT is what will break the aluminum transmission.
I am reading the comments posted but staying out of the argument. However, here is some more info for thought.
The original S10 T5 tail rubber support is shown
HERE (center of picture). HERE I am holding it.
The threaded end goes into the S10 crossmember and the 2 holes on the plate end bolt to the bottom of the S10 tail housing.
The bushing seems to be designed to allow some torsion (either from the frame twisting or from the drivetrain torque. A single bolt is molded into the rubber. The design would allow the rubber to rock a little side to side.
I'm not arguing FOR or AGAINST a cross member. Just supplying a little info, that's all.
If you are convinced that a cross member is what you want, then by all means use a rubber mount like in the photo.
THIS ARTICLE printed in Hot Rod Magazine in 2012 shows a cross member support that in my opinion is engineered COMPLETELY WRONG. See photos #23 and #24. They have the tail housing bolted to a 2 bolt style rubber bushing which will not allow sufficient movement with torsional forces applied. A single bolt design that is molded into the rubber (like the one from my photobucket page) would allow movement and yet add support.
