Semi truck suspension  

If the shot bushing doesn’t fix vibration then I would suggest playing with the ride height but only +\- a half inch from stock. Get the driveshaft angles right and they ride like a large car should 👍

The bushing/joint on the torque rod has play.

Torque rod bushings bad

I guess nobody can see that shot out bushing

Transverse rod bushing on top of front drive axle

The arm shaft on top of the transmission is loose because the bearing is shot.

Torque bar bushing on top of rear end