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My '66 Ford shop manual shows for V-8 Mustang applications the following specs:

1.) Camber max. +1 1/4 deg, min. -1/4 deg, max variation between wheels 1/2 deg., ideal is +1/2 deg.

2.) Caster max. +1 deg., min. -1 deg., max. variation between wheels 1/2 deg., ideal is +1/2 deg.

3.) Toe in max. 3/8", min. 1/8", ideal is 1/4"

Doesn't say one side should be different from the other, in fact it implies that the adjustments should be as close to the same as possible.

I adjust mine with 0 deg of camber, about 2 deg of + caster, and only 1/8" of toe in. That's with a tight front end though. The car handles well on the street with 620 1" drop front coils with 1/4 coil removed. This lowers the front about all I can stand with no tire rub. I also use a 1 1/8" sway bar and Gabriel Strider adjustable front shocks. Even with out the Shelby drop, the car handles well with 215/60/15 BFG radial TA's front and 235/60/15's at the rear. I use 5 leaf rear springs with the mid eye option and a 3/4" sway bar. Same Gabriel Strider adjustable shocks. Works well for me on a street driven performance car.

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