Hi,
If you need more info on vintage Treks including the 330, you can visit the
Vintage Trek website at: http://www.vintage-trek.com/
I own a 1987 Trek 330, serial # T7E80293. It is Reynolds 531 DB tubing with investent-cast lugs and cro-mo fork. It is a decent rider. Interestingly, in 1987, only the components were changed on the upper models (including the 330), while the frames were all the same=early Trek marketing.
Stephen Bryne In hot Fairfax, CA, USA, third stone from the Sun