Since I have owned an AMF2100 for the last four years I can tell you a fair amount about the boat, especially about fixing things. I have raced a little PHRF.
I race with a rating of 240
AMF 2100 low: 231 high:289 mean:249
1980 Northeast florida rating for a specific AMF2100 (not mine):
AMF 2100 base rating 246, adjusted 246 headsail:150, OB, Spinnaker
Is there anyone out there that can tell me about the AMF 2100, or a source that I might access to get the racing stats/rating on the boat.