The truck has only 73K on it. And it's an '89 4x4 pickup with stock wheels and stock sized tires.

My main concern is finding the time to do it.

I'm a bit confused about whether the hubs need to be removed or not. The links Little Joe sent seem not to show that but James Chow suggests they do with a specific torqueing procedure for resetting them. The Haynes manual isn't too specific(surprise, surprise) but shows the hubs being removed.

Is this an easy enough procedure? That $490 pricetag got me spooked.

Thanks to all for the suggestions.