The PTO and hitch stayed on as options after the CJ-3A was replaced by the pictured CJ-5 in the mid-50's. The Spicer/Dana 18 transfer case with the full-torque PTO out the back made the tailshaft possible. This was replaced by the Dana 20 around 1972 and since that transfer case lacked the rear PTO port the tailshaft option went away then. I'm not sure when the hitch option was discontinued but there were a variety of aftermarket companies (four that I know of) that made 3-point hitches and the later CJ-5's could have been upfitted after-the-fact.
The PTO operation was a little weird since, being driven from the transfer case, its rotational speed and direction was dependent upon the transmission gear. It only turned at 540 rpm in first gear (of the 3-speed, not the later granny low 4-speed) and would of course rotate backwards when the vehicle was in reverse. A 540 tailshaft option was also available for the early IH Scouts which also used the Spicer 18 transfer case. The same transfer case PTO could also operate a winch (like it does on my 1961 Scout) and here the different speeds and direction provided by the transmission is a benefit instead of a hinderance. For stationary PTO work the transfer case is placed in neutral.
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