The knowledge base here continues to amaze me!That looks like the early offset to passenger side.Same drivetrain as Jeeps of the time. Don't recall weather an offset Dana44 was ever made without the removable(keyed) hub. A olderJeep rear with same Spicer 18 transfer case(dual stick like your Scout) may bolt right in. Sometime on the mid-late 60's they change to center drive with model 20 transfer case.. I had 68 CJ5 with V6 engine, which by that time had changed to center drive.It may have been in 64 as that was first year for the v-6(if memory serves) The 4 cylinder Jeeps were mostly 5.38 ratios which is likely what you have in that rear.