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my truck seems fine around town as far as steering goes but i do feel a little wander up in the hills especially when theres road construction and they drop down to 1 lane gets a little scary especially towing been reading into all these upgrades and such but again just want ot do it right the first time everythings tight under there and i changed the track bar a few months ago maybe a psc box or the brace? i hear the 99 was a pretty good setup.just looking to tighten it up a bit.

I upgraded to a steering stabilizer, but mine is 2wd. You could try a better stabilizer from skyjacker or Rancho. Have you checked all the tie rods, ball joints and the pitman arm? Mine does good now, but I replaced everything with moog greasable units.

There are some good reviews for the steering box brace though.

yes checked everything looks good and tight put on beefier track bar just a little wander i believe i have the t type heavy duty steering so i want to change the steering stabilizer shock and also the front shocks and maybe put on a steering box stabilizer

If everything is tight those are the only other things to replace. good luck!