For some reason the elocker 3rds on the newer Tacoma trucks (the one you have) keep puking even in DD duty. It's a problem with the ring gears stripping out and no the locker itself. The Tacoma community thinks they are all junk, i say it sinks of a QC issue/the newer tacos are big heavy turds with more power than my gen taco which don't have the same rampant problem, but what do i know i only applied logic and experience to the equation. I love my elocker and it has held up great since 2005 running my duals through it, my s***ty driving and i leave it locked 100% of the time while wheeling. The only reason I'm getting rid of mine is because i want rear discs so an 80 axle is going in. I may try selling just my 3rd on the open market if you want a housing with shock mounts welded on it already, i dont think its bent.
Even if the turbo is in good condition I don't think power would be an issue. The turbo truck is going to be fly weight as compaired to the '84 and it weighs in under 4k. I just need to find an fj80 axle to get close to the width. I think I want to just run the radius arm suspension as well.
You can get the parts from low range offroad to ger the elocker to work. If you are not in a rush I can see how involved it is to yank out all the electronic junk to work my elocker and send to you if its possible.
You should not have any problem running that rear axle.