Me too. The needle bearing type is probably slightly more "efficient" than a plain bearing type, but it's only in use when the clutch lever is depressed anyway, so efficiency doesn't come into play that much.
Maybe there's a bit more freeplay available, to counter a slightly offset main shaft? Dunno, but it's pretty hard to beat a plain old Bronze bushing. Nothing really to go wrong.
This clutch kit you've got. It is a conversion kit, correct? Not just a standard Bronco setup I mean? I'm guessing it's a conversion kit for use with the ZF, but just in case it's stock Bronco, make sure that the bushing/bearing slips over the snout of the trans shaft, and fits into the recess of the crank.
I assume it does, but it's better to make sure now, rather than later when you're bench-pressing the thing, and have 200 lbs of ZF over your chest!
Paul