Steve Hannes: This is a closeup look at the output of the auto trans. The outer (larger spline) is drive coming from engine torque; the inner (smaller spline) is driven coming from the 39% torque output side of the transfer case. Finally, I'd like to say the purpose of this project is to open up the case, show you what's inside and propose that some simple repairs to it might be possible if parts can be sourced. ****** more info: http://jagmotorproject.blogspot.com/2007/02/motor-project-17-transfer-time.html ******