As Gregory has mentioned, I can confirm that bikes were produced for the 2002 season, with parts being made in early 2002 for them. This was the last year they were made it in very small numbers, and the last one was sold to me. It's a special bike with Ducati throwing the kitchen sink at it towards the end to keep it competitive. They are really great to ride, very light and very easy to handle. You look, and it turns.
Tom I is the eBay member selling the the 748RS parts and he is a member of this forum. He bought a 748RS from Canada, I believe, as a basket case and then broke the bike and sold off the bits. They are super trick and obviously the ultimate 748. The cams are a one off I understand and are extremely rare. Sigma performance used to have one and you can see their thoughts on it here and some photos. http://www.sigmaperformance.com/748r-748rs.html