I'd be almost sure it would be a direct fit. You'd be better off if you could get the gearbox and tailshaft. Not having seen the 5 speed in the Bakkie, it's hard to know what length tailshaft it uses. The Ute and the 4 Door sedan have the same length tailshaft. I know that because a CA18 1200 Ute used my CA18 tailshaft from my 4 door sedan. I would expect that the worst case scenario would be that you'd have to make the gearbox mounts and get the tailshaft shortened. But the tailshaft could be similar. carry around a tape measure and crawl under a parked bakkie and find out for us.

Make sure the owner doesn't come back to his car and drive over you.