[mosesburb]

No, it is a GM 4500. I converted the front of it to the Dodge HD input shaft and bearing retainer. I had to have the pilot of the bearing retainer where it fits into the trans case machined down to fit into the bore of the GM trans. Both the GM and Dodge use the same input bearing, but the Dodge has a heavier "ring" around it.
As far as the 5th gear nut, I am using the GM setup that has the vibration damper on it. I discussed the matter with Dan at Quad 4x4 and he said that if the gear and the damper still have a heavy press fit, I should be ok. I am not towing anything heavy with it, so I put a bunch of red loctite on it and with a new nut, torqued the snot out of it--325ft/lbs is a ***** even with the case strapped to the bench.