Tony, Al and the crew did a full rebuild of the motor on my Porsche. It's a somewhat unique car and the team at Callas Rennsport unquestionably had the knowledge, skill and resources to handle the intricacies and nuances of this process. It took a while, although not longer than the predicted time, I could not be happier with the outcome. I'm confident that my car is now better than it was than when it left the factory over 50 years ago.