Sorry I didn't respond sooner, but I started a new assignment at work and also was out of town for several weeks. If you're still considering the IMS retrofit, I could recommend J&W Motorsports in Doral (
www.jwmotorsportsracing.com). It's a small indie shop and William Svoboda handles the Porsche side, so address your email to him. I was recommended to them by another 6speeder. Good luck, and let me know if you need any more info.