I lived in Gainesville (I went to UofFl Architecture Dept) where these boats were built. I would occationally visit the factory which was a surprisingly small and simple facility.
They bear no relationship to the Canadian Mirages. The Florida Mirages were a Bruce Kelley design. The Canadian Mirages were, Bruce Farr, Bruce Kirby and Bob Perry designs.
Your boat was designed as a MORC racer and was slightly modified for production to be a bit more of a cruiser as well. I believe that the proptype had a dagger board but the production boats had swing keels.
I have only sailed on one of these briefly (beer can race and the wind died so the race was cancelled.) The guy had a very tough time sailing up to his rating but I didn''t have enough time on board to figure out why.
What are you trying to find out?