['88 Turbo S]

I wanted to introduce myself here as a new member, and put the following situation out here for some assistance/information.
I recently inherited a 1988 944 Turbo S. While I do know a little bit of history of this one owner car, there is MUCH that I do not know. I am hoping that I can find a few here that can help me with sorting out where to head with my recent acquisition. The first owner is no longer alive, so asking him pertinent questions is out of the question. The car is a fairly nice condition, all original car, with 116,000 miles showing. It has never been modified in any way. I have verified with Porsche North America that the car was one of the 718 Turbo S models delivered in 1988. It is White, with Burgundy leather interior.
The car has been sitting and had not been driven in the last 10 years. I know that the brake system was gone through by the previous owner in the 6 months prior to his death. He was NOT mechanically inclined, so I know that he depended on others to provide any work done on the car. Most of the early work was all done by the Phoenix area Porsche dealer. This brake work was NOT done by any dealer or verified mechanic. I was told that there were all new pads, fresh fluid, and the calipers were rebuilt. However, the car does NOT roll about with ease. I assume that it is not very movable, due to one or more of the brakes dragging. I have not had the time/opportunity to get the car off of the ground and see which of the brakes may be the culprit. After the previous owner had gone through the brake system, he had then decided to do the timing belt and various hoses, prior to attempting to place the car back on the road. The car now sits with the front cover and intake disassembled, and supposedly all of the belts and hoses in the car. I have not even had the chance to inventory the parts to make certain that everything is indeed there. I am keeping my fingers crossed that all is good there.
That being said, I live in Southern AZ, on the California border, so access to the San Diego and LA area are fairly easy. I am hoping that someone here can point me in the direction of some good mechanics and tuners that would be well versed on the 944 Turbo S, so that I can discuss with them what would be the best approach to getting this car back on the road and into the condition that it deserves to be. I would be more than interested in doing some appropriate mods, so that the performance of the car can be brought to current state of the art standards. Any and all suggestions will be appreciated. I do expect/anticipate that the car will require me to invest a substantial amount of money. However, given the sentimental attachment, I can not possibly do anything other than bring this old car back to it's original glory.