It honestly wouldn't be a bad route to go. Would have to source a FRC (fixed roof coupe?) and then mod accordingly. And it is really easy to mod those. But if you cloned it, you may save like 2-4 grand. And it would take time sourcing some of those goodies like the glass. 3,099 is not unheard of in those. Here is a good write up on the ls1 and ls6 [ http://www.cadillacfaq.com/faq/answers/pdf/ls6-article.pdf ] BTW your car has been the highlight of my calendar voting for several years. Gorgeous.