I just looked at the JCWhitney website. The pad thing I have never used. The guage that looks sort of like a curtain rod is very similar to the tool I used to use to adjust tow in/out on HMMWV's for the Army. It worked pretty good but their is no way to measure camber (just like with the pad thing) Instead of buying a tool of unknown quality or usefullness, I would recomend that you thoroughly inspect all of the parts of the front suspenion/steering (look for worn bushings and tie rod ends; worn or misadjusted wheel bearings; or worn ball joints) and replace any faulty parts. Then take it to a reputable alignment shop and get it aligned right. If you dont do much off roading in it, your alignment problems will probably disapear for good. When you do decide to start offroading it, any of those parts I mentioned can ruin your day if they fail on the trail.
By the way, the hubs really are a piece of cake. The instructions are in the box.
Didnt mean to ramble on so much, hope this stuff helps you out.
One last thing, when checking front suspension dont forget the radius arm bushings, they are easy to overlook if you are new this stuff.
