Thats a pretty expensive option.
You can also buy an air locker for the same diff. I think its dearer

But rememeber its pesos, well your dollar buys 80c or so.
I just stripped a pickup, took the chassis up to my mates place for his hotrod project.
The guy i got the truck off showed me a video of it in action. Welded diff G200Z, 2nd gear buronuts till the tyres popped.
He was avoiding another car he was doing burnouts with and went sideways into the gutter and smacked the rim really hard and broke the axle and buckled the rim hardcore. Id say the housing was bent too.
Then he showed me the the video of it doing 4th gear burnouts on the wheel with the un broken axle.
The wheel in the tray on the back had no tyre left it was just the beads around the rim. lol.
Id say if you know how to weld its pretty strong.
If you break an axle you wont be able to drive your truck. The axle needs to be supported by the center or the wheel just flops around on the bearing.
Early troopers were all meant to be LSD with the G200Z motor. It was an option with the 2.3L and std with the C223-T Diesel. Thats what i was told, not sure how true it is, im yet to find one and ive wrecked a couple. Apparently they were not very strong.
Bob.
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Current project, 1979 KB Isuzu Ute.
Daily driver, '86 Rodeo Spacecab.
Chasing parts for Isuzu Impulse.