By chance, Max, the parts guru for Mark VIII's all over the country, is actually located at 5 Star Ford right here in Scottsdale -- down on Motor Mile on McDowell Road and 70th Street. Any part you order from Max can ALSO be installed by the techs in the 5 Star Ford shop -- from exotic upgrades to common repairs. If it's a crucial part like an alternator that needs immediate replacement in order to drive the car, Max has lots of stuff in stock. If he doesn't and you need it ASAP, he'll try other local stockers and dealers to get you what you need as fast as possible at the best possible price -- so you don't hafta wait while a do-it-yourself mechanic goes round and round looking for parts and ends up with the wrong one and leaves your Mark disassembled for a coupla days.
On the other hand, though labor at a dealership tends to be more expensive than an independent mechanic, at least I have NO doubt that 5 Star is totally competent with all the Ford-factory parts/manuals/TSB's/and experience to fix my Mark right the FIRST time.
So between rock-bottom prices for parts and quality labor all in one stop, that's where I go!
PS: 5 Star Ford has a courtesy shuttle, but it only has a radius of 10 miles one-way. What's going on all the way out there in Surprise?!?