[Utah_jeepster]

Though this is a jeep board you happened to get one jeeper who had owned a 73 IH Scout II with the 345.

The Torque Flight 727 came in the 73 and was a reliable, heavy duty transmission, it has a 23 spline out put, and bolt pattern that will match up to a twin stick Dana 300 transfer case.
A competent transmission shop could do the 904 conversion in the internals as I did in the late 80's to handle the 4:56 gears in the IH Dana 44's.
Now as to weather a Chrysler TF727 will bolt up that I don't know I think they were in some Full size mid 60's jeeps bolted to the AMC 304. If I remember right they were a different bell housing but don't quote me on that.

	Transfer Case Mounted behind and driven by the vehicle transmission, the transfer case transmits power to the front and rear driveshafts in 4WD Jeep vehicles and offers high and low range.