You buy a posi-trac rear differential.
my 95 is posi !!
Yes, it could be ordered with GM's Posi-Trac as an option.
YES, both tires must be the same size on the same axle, be it posi-trac or non posi-trac. Never, ever, mix sizes on any axle.
One new and one wore tire can destroy the posi Trac.
You can change the rear end of a 1988 Suzuki Samurai to Posi-trac by opening the differential and removing the existing ring and pinion gears. The Posi-trac assembly is then install and the gears put back in place.
No, it most likely does not have the posi trac
I think Joe Dirt's Dad can answer this. He said, " Hey, how exactly is a rainbow made? How exactly does the sun set? How exactly does the posi-trac rear end on a Plymouth work!? It just does." They just died, left, collapsed.
If you mean "limited-slip", yes
No, it was an option
I assume you mean posi-trac rear end. Raise both drive wheels off the ground. Turn one wheel and if the other wheel travels in the same direction it is posi-trac.
3.92 gear ratio on the posi trac R/T hemi