Help! Dog Tracking!!

Unless they've worn dead evenly over time (not likely), bad spring eye bushings on a live rear axle sprung with semielliptics will cause some degree of dogtracking and the odds are how much will constantly change with every input of load, coast, and brake, and every bump in the road. If that's the case, no amount of getting the static rear axle alignment perfect is going to mean much. If the spring eye bushings are not worn and are perfectly centered in their spring eyes (good luck with that unless the bushings are relatively new), unlike a semi elliptical sprung rear axle on a Ford or Chevrolet that usually require cutting and/or welding to properly fix rear axle thrust angle, 1/2 degree on an A body rear axle should be easily adjusted out. This is because the front leaf spring hanger bolts in allowing you get the rear axle dead nuts perpendicular the center line of the car, usually with just a shim or two.

I used to poo-pa four wheel alignments on my Camaros and Mustangs because if you had a problem beyond worn bushings, there wasn't much you could do about it short of structural modification (welding, drilling, cutting, etc.), but it really makes sense to have a good four wheel laser alignment (thanks to all the independent rear suspensions and front drive cars out there these days, a lot of times you aren't given a choice) done on any of the live axle rear drive Mopars. If you do step up and have the a four wheel alignment done and the thrust angle is off, I'd be making sure the shop will shim your axle to get it correct, or retest for free if you have to do it.

While skewing the rear axle may be the hot setup at times on a circle track, keeping the rear axle pointing straight ahead is an imperative for a predictable, easily driven car otherwise.