Yep, handle-bar style. The three holes you're pointing at are where the brackets-with-pivot-tubes attach to the frame's tubular crossmember--two brackets, each with three short bolts. As kunzma said, the third photo is the location for an eye-bolt that pivots on a pin and goes through a slot in the cross-plate at the handle-bar end of the wheel carrier.
Or.....as LITP has stated, with some work, you could adapt one of the later crank-style wheel carriers--it all depends on your luck finding either of the two carriers and their related pieces and your desire for "period correctness" with your truck. And then again, some folks have given up searching, and mounted the spare in various places in the bed.
Best of luck.