Scott,
You may want to visit this GP tread:
http://www.bikeforums.net/showthread...nd-Prix-thread
also check out this site:
http://www.kurtkaminer.com/bikecollection.html
I'd venture a guess, not much of a guess actiually, that the shortie fenders are Bluemels that were added by some previous owner. Nice GP though.
Gary