[APKhaos]

We are lucky to have more than a few great Porsche specialist shops around town.

I've worked with Charlie at Intersport for a long time, and he is one of the very best. Its a busy shop.
I've also worked with Stan at RPM, and can assure you that his operation is detailed and careful, and very knowledgeable about our cars. Rock solid.
Another outstanding choice would be Geoff Schwartz at ASG. Expert race prep for everthing from his partner's red hot 2.0L 914 to professional race team work. Geoff ran the technical operation for the GT class winning Farnbacher team at the Rolex 24 Hour at Daytona last month.

I know Ivan well, but have never had work done at his shop. No reason not to, its just the way it worked for me.

Given your location, RPM [in Newington, a few miles south of the mixing bowl interchange] is almost a natural choice, and it would be a good one.