None that I know of...I have taken my RS to ProAudio, for stereo stuff, and they do "minor" mods(i.e. suspension, intakes, etc...) but they don't have a lot of scooby experience. But the guys are smart, responsible, and take their time.
I'd heard someone talking to German Motorsports about doing engine work. They are the Porsche tuner over on the corner of Woodburn and Madison(right before it turns into Martin Luther King, heading towards U.C., by Purcell High School).
I haven't talked to them yet, but they would have a lot of experience on our type of engine. Give them a call, see what they say. Also, AFS Motorsports is somewhere in Indiana...supposedly not too far away.