If the trans is "aft" i.e. in back, of the torsion bar crossmember, then it seems that you are going to run into interference from the X frame, where the drive shaft goes through. Also, it seems that you are going to have to lose the original crossmember that the rear engine motor mounts were attached to. All this is in addition to what the other response said about modifying the torsion bar cross member.
