From my saddo collection of sales literature: Ray Dentith, the owner of a small local bike shop near here, had one as a track bike, but I've not seen it for quite a while. The Silver is brighter than it looks in the images, but isn't that bright.
You can see in the images that they came with the SL seat unit and pipes, but also what can't be seen is the underslung floating rear caliper on a Torque arm to the engine.
This is pretty much the perfect 999 to my eye. I'd hardly change a thing. Gorgeous bike, thanks for posting! Is it yours?
BTW, does anyone have any decent pics, meaning resolution and decent size, of McGuinness on the Monster Mob 998 at the TT in '03, i think it was?