I think we're in violent agreement. A true locker would be pretty inappropriate for the front end of a pbuttenger car. Limited-slip, on the other hand, makes sense in some situations (if memory serves, my model of Toyota offered nothing else in Canada, though it was an option for US-destined units).
Even the hardcore and perhaps somewhat specialized off-roaders who put front lockers in their trucks go for the kind that's under your explicit control rather than the somewhat automatic sort that's more commonly installed in the rear. Even on a trailered trail rig that seldom if ever sees pavement, a locked diff is not something you necessarily want to put up with in all situations.
I can't even think offhand of anything with any pretense to a dual idenbreasty as a mainstream pbuttenger vehicle that comes with factory front lockers. Only a few gnarly trucks like the Unimog and the Pinzgauer have them. (The H1 Hummer and its military older brother use Torsens, AFAIK.)
A very few early attempts at all-wheel drive for pbuttenger cars may have incorporated lockers or something like them, but I don't think that ever got very popular nor did it last. There have been two or three technology generations of better ways to solve *that* rather different problem.
Anyway, unless his part of Texas involves a lot of dirt roads, I think the original poster would be wasting his money retrofitting limited-slip on a Taurus, even if someone makes the kit available. I think of it as a good option for the Frozen North or for vehicles that see a lot of sand or mud underfoot, with a side interest among serious muscle car enthusiasts, that just doesn't do a whole lot of good for owners of regular cars on either dry or rainy pavement. Paved parts of Texas and the cheapness, reliability, and very low maintenance of a regular "open" diff were made for each other.
Cheers, --Joe
