They came in 4X2 and 4X4 versions, the earlier N/A version used a Perkins 4.135 2.2-liter which put out about 59 hp and the later turbo version used a Mitsubishi 4D55 2.3-liter which was good for about 84 hp.
They are quite rare anymore - lots were bought up secondhand and shipped overseas for mining companies.
Seems there's about one a month shows up on Ebay.
4X4 is EXCEEDINGLY rare - i have heard of 4X4 Bronco's but i have never seen one on the hoof. 4X4 tranny is not mentioned in my '83 Ranger shop manual...
83-84 had the Mazda, 85 and later were a Mitsubishi with a turbo and more power.
People who have them tend to keep 'em. There's an 85 in a neighbor's yard here in NE Arkansas but he's a bit eccentric, not interested in selling though it has five years of grass growing up around it.
I have an '83 2.2l. Bearings and gaskets are available from Clevite and Felpro but pistons and rings are trouble. I'm still looking.
I'm in the process of putting a Mercedes inline 5 turbodiesel into a Courier. Custom engine swaps tend to be my thing. I'm also converting it to 4x4 with a D44 front axle from a Wagoneer that I'm cutting down 7" to correct the track width.
If it doesn't exist, build it-