Was the superior arms set with more castor than standard arms with normal offset castor set for say 4 inch lift.I have replace everything several times over in the front end of mine, but the lower panhard bush made the most immediately noticeable difference. Fixing the caster correction with Superior arms made a big difference as well, everything else wheel bearings, king pin bearings, tie rod ends and other bushes all just contribute to the front steering and suspension being loose but I do not think are the key cause or solution.
There is also the other big contributing factor of wheels and poor wheel balance, this is what kicks off the wobble, even before you ever start to feel it, it is beginning from wear on components.
I had tried two different sets of steel wheels, one set of 35" mud tyres and 33" aggressive ATs all of which were hard to get balanced well. I have now gone back to alloys and 33"ATs and I'm fussy about getting the balance right. I believe that the combined forces of larger tyres, wider offset wheels, out of balance and travelling long distances shaking the hell out of the front suspension is the major contributor to loosening up every part of the suspension and steering. But the root cause of the wobbles is the suspension geometry being a fine compromise between: lift/articulation and still wanting nice road manners all from the old fashioned solid axle, three link system.
Nissan have it well set up for standard height, standard wheels and tyres. I noticed how thin and light weight the factory tyres and wheels are now, even compared to the alloys and tyres that came out on the series III GU, the series IV and newer 17" alloys are very light, the 275/65x17 tyres are really light and balance well. They have made it much better for the road or should say street.
PS: woohoo, the poll says that 100% of the voters agree with me
Scrap that, some other cheeky bugger just voted for wheel bearings