[Perfectlap]

I would pay $448 for alignment but only if they let me watch with the service manager also present as well so that afterwards he could explain to me that what I just witnessed was a highly specialized skill that only a few select highly trained Porsche techs in the world could perform.

Find a speed shop, one that is familiar with sports cars and have done there. They do allot of those probably and can do the job quickly. If you go to a regualr cars type place, ask for a print out of your alignment numbers before and after the alignment. If they look at you like you are from mars go somewhere else.
A factory spec aligment should not take anything close to an hour if your car is only a little off. So if the shops hourly labor rate is $140 per hour then something around that should be fine unless they are adding a surcharge to get back their money on the recently purchase alignment machine.