I'm running, .5 neg camber, 3.0 caster & 1/8" toe. This works for me, with a the "drop" and R&P steering.

 

That's pretty close to my settings. I have .5 degrees negative camber, +2 degrees caster and 1/8" toe in. It seems just about right to me. I bought new tires at the same time I did the alignment and after 10k or so miles there's no abnormal tire wear.

 

That what I have run on the street on my 65-66, 69 mustangs and my 68 torino with drop. 68 torino uses the same uca,lca, spindle, and geomitry as the 68-69 mustang. 0 camber gives even tread wear on the street. It will not be as fast in the corners as -3/4 camber but you gotta be driving the car like David Pearson to find that out. Most mustang people i have ridden with dont even drive fast enough in the turns to even need the 1" drop.