Re: Adjustable rear trackbar
Your axle is provably 1/4'' to 3/8'' off which isn't all that bad. Try flexing the rear axle with the driver side wheel fully stuffed, then check the drive shaft and see how far it is from the gas tank skid.
If it's 1/2 or more, then you are perfectly fine with the stock track bar. Your wheel alignment wouldn't be that far off either and your tires will be fine with even ware.