Just an FYI if I can help anyone. Owned street XJS's for 25 years. Built an XJS, GT-1/Super Production ground up and raced Jaguar 10 years (about 100 podiums). Any questions about the 12's or preparing them to race, I ill try to answer. Currently have a 2000 XKR (upgraded) convertible. There is no "I" in Jaguar.