I''m the original owner & had this bike for 25 years. It is all stock with Sun Tour Superbe Pro components except the brake levers are Dura-Ace. I believe this is a Grant Peterson frame. I've been told this is somewhat of a "cult" bike. Here is a link. it is in very good condition & has maybe 1,000-2,000 miles on it.
http://www.sheldonbrown.com/bridgest...ne-1987-05.htm