There is no rear alignment on that vehicle. If the rear is off the geometric centerline and thrust angle will be off. Alignment machine will show this. If it is off, the rear spring perch is broken, or loose. If the car has radial tires I set camber as close to zero degrees +/- 1/2 degree....try to get as much positive caster as possible. Usually hard to do if still has factory front suspension. FirmFeel.com has great parts. Toe-in 0 -1/32" in total.
You can actually alter the rear alignment by using the shims mentioned in one of the above posts. Adding shims between the front spring hanger and the mounting boss on the car will effectively push the rear wheel on that same side towards the back of the car thus altering the relative position of both rear wheels to the front wheels slightly.
