[Mike C]

I have a TruTrac in the front of my '52 M38A1. You don't notice it is there at from a driveability stand point, but you can tell it doesn't spin the left front front tire on uphill climbs anymore since both are pulling. I would recommend a TruTrac for the front as the others have. And for that matter, if you are buying a rear limited slip type diff I would go TruTrac there as well.

The first one I installed was in a '79 CJ7 that was a QuadraTrac vehicle. Fulltime 4x4 and the TruTrac the ONLY diff recommended for street use in that application.

On my son's 72 Jimmy project we are working on we swapped 3.73 axles from a '84 3/4 ton sub. The rear is the factory Gov-Lok and we put a used posi from a '78 TransAm in the front. This worked good for us because the Gov-Lok came with the truck and the Eaton LSD was free. Limited slips work well in the front but some of the challenges in snowy/icy conditions have been mentioned above.

I have some auto locking diffs in a couple of other front axles, and you definitely don't want one of those on the road!