Thinking out loud... (dangerous stuff)
The FJ60 body & frame looks like a trailer kinda. It has taillights. It has a "tongue" (bare rails out front). It just needs a hitch coupler bolted between the front bumper mounts, and a rear axle on some old leaves. With no engine, trans, transfer, shafts, steering, frt clip.... There shouldn't be that much weight left. Anything heavy can go at the extreme rear of the trailer or in the backseat of the towtruck.
go for it!