ISO ZF 6 speed
 

My F350 has the ZF 5 speed and I know the syncros are shot. I figured I'd start looking before I really need it. I'd like to go back with a 6 speed. The engine is the 7.3 diesel so it wont interchange with the 6.0 transmissions. Would prefer one with a transfer case. I'm already planning on a body lift to clear the 6 speed