For stock 7" wide front wheels & 8" wide rears, we use 1/8" toe-in front & back, all the caster you can get in front (about 2-1/2 degrees) and 1/16" negative camber frt & back. If the lower subframe has collapsed inward as on most, the rears may be unadjustable for camber without welding. An aftermarket adjustable rear camber bar between the inner rear fender panels may be able to take some of the negative camber out but be careful not to overdo it or cracked paint will result. If the tires and wheels are wider than stock, the toe-in @ both ends can be cut in half, especially if less flexible poly a-arm bushings are being run.