4by ranger, "yes" you could gut the 4wd diff out of the beam, BUT your going to bend/fold the beam (diff side)then with any hard use.So in other words don't do it.unless you want to plate the 4wd beam in.Or untill you get a equal lenth kit under the truck.
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back in the early days from,f150;'s starting in 82,ranger fromt birth, and the B2's from birth had a "boxed" beam built alot like the 4wd beams, just with out the diff "cover" buit in to them. this was till about 84.5-85, then all 2wd beams went to forged atleast on the ranger and f150. The b2's I cant say I ever rember seeing a "Forged" beam that was as "tall" as the 4wd beam. But I have seen the 89-91 b2 2wd beams there were tall, like the explorer 2wd in "cast"