Richard,

As I understand it, your Jeep does NOT have manually unlocking hubs.

There are a number of us who have automatic lockers (e.g., Detroit Lockers, LockRight lockers, etc.) or limited slip differentials (LSDs such as Positraction, PowerLoc, etc.) in the front axles of our Jeeps; these Jeeps are used primarily off-road and only occasionally used on pavement, and very rarely on the freeway. HOWEVER, we only install the lockers there if we have locking front hubs that we can unlock on the street and then drive in 2WD. The ONLY time I lock the front hubs and engage 4WD on the street in my CJ7 is if there is more than 6 or 8 inches of fresh snowfall -- and then it's like driving in the snow offroad -- going slow.

If you can't disconnect your front wheels from the front differential, as with locking/unlocking hubs, then the only suitable front axle traction-aiding device (in my opinion) for your vehicle is a selectable locker (e.g., ARB Air Locker, Ox Locker, or one of the electric/magnetic selectable lockers). That way, you can de-select the locker and essentially run an open differential on the street.