lBruce is right on with his suggestions. I would add a few things. First, change all the fluids in the car. Engine and transmission oil, coolant (you'll have to do that when you change out all the rubber). Also, flush the brake fluid out of the system. Brake fluid is hydroscopic and will have absorbed moisture over the years if it has not been changed out. While your're at it, you might as well change out the power steering fluid.
Depending on what you see in the service history, the car may also be ready for a set of spark plugs.
I would also put the car on a lift and look for any fluid leaks. On a car that old, you might expect leakage around the camshaft cover seals. In addition to the perimeter seal, there are O-ring seals that seal the cover from the spark plug recesses. When these seals leak, you end up coating your spark plugs with oil!
At 32,000 miles, she is pretty much a garage queen. If that is 32,000 klicks, she is definitely a garage queen! I both envy you and am sad at the same time. Like all Porsches, the car is meant to be driven.....and like all Porsches I have owned, the harder you drive them, the better they run! There is a difference between running a car hard and abusing the car. Learn the difference.
As to your concern about parts, they are a little bit harder to source than those for a 911; but, you can get just about anything for the car over the internet. You will have the upcharge for shipping that we don't see, but you should have access to all the parts we buy. I source most of my maintenance parts outside of the dealer. For parts that can only be had from a dealeer, you can contact both Sunset Porsche and Stoddard Porsche here in the US. I have not dealt very much with Sunset, though most of the members of this board talk highly of them. Stoddard is noted mostly for 911 and 356 parts and accessories. But, their service over the phone is exemplary. As you may know, all Porsche dealerships are tied together on a sourcing electronic network. For these older cars, they can locate the most obscure parts. An example is the cable actuators for the convertible top on my 93 cab. One of mine was destroyed when the top was being replaced. Though there were none to be had in or around Chicago, where I live, Stoddard (which is in Ohio), located a total of 8 replacement cables in the USA! Since there are two cables (right and left), my preference was to replace both sides. Stoddard found that only one dealer in Arizona, had stock of both sides. I made the buy through Stoddard, and the parts were at my technicians shop within 3 days!
Enjoy the ride.
Ernie Rossi