when did toyota first come out with a rear locking diffrential as a stock option?

 

early celicas LSD's from what I remember

 

Someone can correct me if I am wrong but I believe it was 96.

 

thats what i heard too. but im not completely sure. where would be the cheapest place to buy a rear locker

 

Didnt older LandCruisers have the option of cable actuated lockers?

 

I know I had a stock elocker on my 97 tacoma - this was before the TRD package.

Cable locker? How does that work?

 

Well, you pull a level, which pulls a cable, which activates the locking mechanism in the diff which connects a side gear or axle shaft to the carrier thus preventing differentiation.

Not entirely sure when cable lockers became available on the Land Cruiser, but I would think it was about mid-80's and probably on the 70 series.

Electric lockers were available Tacomas and 3rd gen 4Runners starting in 1996 I think.

 

would the '96 locker fit on my '91pickup?

 

Pretty sure it was the 70s as well. I know they HAD the option, but did 60s have it too? Maybe non-N/A markets? mid '80s, either the Supra/Celica LSD or the LC cable locker.
With modification, yes. Do a search here, a few people have done it.