You can install a Lock Right locker in the front (I have one in my CJ-7), but you will have to be in 2WD and have front hubs that are unlocked in order to drive it on the street.

Offroad, when you're on very hard dry dirt, you may have to shift from 4WD to 2WD (don't have to unlock the front hubs)when making a very sharp turn. I've only had that happen a couple of times. It's no problem for me, because I have twin-stick shifters on my Dana 300, so I can disengage the front axle easily and quickly, while leaving the rear axle in Low Range.

So, if you're into hard core wheeling, with little street use, a front auto locker isn't bad. If you use it primarily on the street, don't get one.

And I'd NEVER weld a front differential. They suck big time, even off road. Any traction at all, and you won't be able to turn it.

1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.