Kirt, the differences are as follows, visually the boats are very similar with the same hulls, (the f16 is 3cm shorter)
The mainsail is 1.5 sq m smaller, the jib is 1.5 sq m bigger.
The spinnaker is the same (17.5 sq m)
The hulls have a white gelcoat finish, not the metallic silver paint of the new boat.
The boat has dagger rudders but they are not T - foil (T-foils could be added for $280)
The R is 7ft 6 not 8 ft 2 wide.
The beams are aluminium without dolphin striker.
The hulls are not canted (could be done for$150, which would add 3ins to beam.
The daggerboards are the same
The boom is alloy not carbon
The mast is the same (tapered carbon)
The spinnaker pole, tillers, tiller extension are the same, (carbon).
the weight is about 248 lbs (f16 min is 220)
regards
john