The daytona rs and v11 forks are a bit different from most other forks antwhere else used. They are longer, 770mm where most used on other bikes is 730mm. The 770mm ohlins isn't available from ohlins, only ohlins made a batch for guzzi to mount on the v11 scura, cafe sport, rosso corsa. The other thing beside lenght is the mounting in the triple clamps, it's top and bottom 54mm, no other ohlins forks have that. So if anyone wants a slip in replacement for the oem marzochi/wp forks, only ones are the ones guzzi did mount. I would't recommand ordering at your dealer, the price might be a very bad surprise. Guzzi did order more than they used in the v11, so the overstock was sold, when they stopped v11 production. And it happens that one of them ended up in my home, brand new, nice price.
http://www.v11lemans.com/forums/index.php?showtopic=12168