Hey, good win, I was hoping for that one. :x I haven't ever seen the softail versions other than in mags at the time and can't tell too much about the frame from the photo, but anyway based on the urge comp hardtail I have, here's what I remember.
I dunno what model it is (pretty high end likely), but it looks like probably around 1998, in those days the higher end models had a name, then with a suffix -comp, or un.
So the basic model, one with a high range spec and the race version shared the frame (the high end ones were fuji and are verrrry nice) , but had different components. IIRC in '98 the UN specced models towards the top end of the range came with ritchey cranks (2 rings- they were race machines) , ESP 9.0, Arch Rivals, sunn brubz hubs (possibly on syncros rims, almost certainly with hutchinson tyres) syncros stem and seatpost, and an assortment of sunn's own finishing kit, including turgid obsys air or carbon forks.
IIRC there were a few softail models of the higher end models, I remember MBUK gave one a great review, which were basically the same bikes, but with a softail setup.
If you have any old MBUK copies from around 1997-1999 Bikedock in NI had loads of sunn in stock in their adverts that might help you confirm the spec once you know what model it is.
Anyway, it should ride very nicely if the hardtail versions are anything to go by ( I know mine do, either in a retro guise or with modern kit) so congratulations
And if you end up with no space for it, I know someone who might....