Gentlemen,
I can't offer anything other than a strong recommendation. If you decided to get serious about a build (or group buy), please look at what Charles Dundon is doing at
Charles Dundon Motorsports. I was fortunate to pick up a '98 986 that Charles rebuilt. I know firsthand about his expertise and passion for tuning Porsche's. Not to mention, he's a great guy and will do you right.
Regards,
Aaron