What is the splined shaft called that locks or joins the Getrag & Transfer case together? Can you still buy this part? I heard that it needs to be replaced when overhauling. I am about to buy a Southbend clutch, and send the Jetrag out for a rebuild, I recently purchased the rear transmission support bushings for it, upper & lowers, I am trying to get everything together as to have minimal down time. Can you also get a gasket kit for the NP 205 transfer case from say Napa auto parts? And what can you do for the annoying 4x4 shifter handle rattle? Bushing kit or what?