They are actually hard duralin bushings (cross-member to frame) with a factory rubber mount on the transmission. Will be adding an additional brace that runs back from the trans cross-member, will catch 6 of the oil pan bolts on the Atlas & then end being supported by rubber bushings. It will be setup to help support the drivetrain, but still allow the torque to roll the drivetrain when its loaded up (rather than break the bellhousing or mounts).
Lil runnah I have built several crossmembers that solid mount the entire drivetrain in race trucks that use a similar design, in this truck I wanted to allow the movement so that it doesn't try to tear itself apart. I want the drivetrain to be able to move, but in a controlled manner, using rubber mounts everywhere will keep vibrations to a minimum. I want zero vibrations and want it to be stronger than normal rubber mounts. I know the rubber mounts will be a wear item (all mounts are going to be modded so that they can't tear apart and fall), however I want this truck to run down the road comfortably.