alignment tool camber, caster

I thought about buying an actual camber/caster gauge until I too learned that it's just a set of bubble-gauges and caster is a 'calculated' measurement.
I'll be changing the UCA bushings to Moog offset ones on my Dart (hopefully today) and will be realigning the car with my iPhone and a $3 app called iAlign to make life easier.
http://18000rpm.com/ialign_for_iphone_and_itouch/ialign.html