Was there a 550? Because I went in either 2001 or 2002 and there was a Ferrari supported by Pro Drive which was crazy damn fast (ahead of the Corvettes by maybe one lap when it blew up in the middle of the night).
(google intensifies). Yep, looks like it was a 550, not the 575.
Either way I miss the older GT Ferraris (admittedly they simply don't make sense anymore).
Correctamundo! Don't worry too much, the range of front-engined Ferrari GT cars floating around Europe at the time was pretty ridiculous.
Firstly, there were the Prodrive 550's, which debuted at the end of 2001, and proved to be the most enduring and successful variant.
Before that, Italitechnica took two stabs at the 550, one being for GTS/GT1, and the other being an N-GT/GT2 car that proved largely ineffective in the French GT series for a few years, before making a Le Mans appearance in 2003. The GT1 version was actually pretty decent, however, they had largely disappeared by the end of 2003.
There was also a 550 built privately by Wieth Racing, which is infamous for being a GTS/GT1 car that performed as if it was built for the class below. They persisted for a long time in several championships, but never tasted any real success.
Ferrari took notice of Prodrive's speed with the 550, and enlisted the help of N.Technology with the idea of building a 575. The 575 GTC appeared towards the end of the 2003 FIA GT season with JMB Racing, and actually won first time out in Estoril. However, that seemed to be somewhat of a misnomer, as the car only achieved limited success over its life time. This might well have been down to the increased presence of Prodrive 550's and Saleens by 2004, as well as the arrival of both Maserati (second half of 2004) and Aston Martin (2005).
And there you have it - more information than anyone could possibly want or need!