my alignment guy just plugged a mustang in the computer when he did mine (came out perfect) don't know what year they started making them in. Might help?
1/2 degree camber on the left 1/8 degree on the right 1 1/4 degree caster on the left 1 1/2 degree on the right zero toe with radial tires unless you are getting bump steer
Are you running a stock or aftermarket Must II? If aftermarket check manufacturers site. Some kits have extra caster built in. Most hot rods handle better with more than 1 1/2 degree of caster.