dont believe everything bikepedia tells you, its not reliabe i find. From the decals i do think it is 97, perhaps in a colour not listed in the catalogue.
might be an 98 though
It is the exact same frame as the one in show us your GT's where they guy thinks its a 97 too
GT class it as a size 18 measured, centre bb to centre intersect on seat tube. but it is 20 centre to top, the top tube is not overly long though i think i measured it at 22.5 so comparable to other medium size frames. The lack of sloping top tube makes it look bigger too i reckon. Having read through threads here there are freaky tall people who like a size 16 GT, and normal size 5'8-10 people who are perfectly fine on this middle size GT. so its horses for courses
For me it just looks and feels to big, its a mental thing rather than the bike not fitting, i also like more standover
they also did a 16 and a 20 inch gate. this is the middle size medium, it would make no sense i reckon to make a medium a large and an xtra large
its a lovely frame though