Caster

It's unlikely you'll be able to set it by "eyeballing". I like 1 degree positive caster, 0 to 1/2 degree negative camber, and 0 toe-in. Some of these specs might need to be changed a little to account for tire size and type, and if the car has manual or power steering. If you're going to have the "stink bug" look, It won't handle good no matter what specs you use.
Mark