i run only a front locker and its a hell of a lot better than open f/r. i would do the front locker first since it will pull you over stuff a lot better than the rear locker will. however when side-hilling on mud and stuff, it has a tendency to swing the nose down the hill. definitely a different animal then the rear locker. i went to the mounds (michigan) on one of the wettest nastiest days over the winter and got stuck a lot with open f/r. i went back about 2 weeks later after it rained the entire week and went the the same things i got stuck in a week prior, thanks to the locker.
on the road my lock right is invisible, i cant feel or hear any clicks and it drives really smooth. on the trial, as soon as you throw it in 4wd the locker engages since there is a load on the front drive shaft.
i out wheeled my buddies 97 with 7" of lift, ax-15, 4.10's and locked rear, with my locked d30, 3.55's and 32's.
as long as you have one axle locked, it will help you out tremendously.
