Hola Chris,
I am in the same camp as d_gatorfan. I had my car registered ( Miami-Dade County) on 4/2015 and was not required to have a Florida-assigned VIN stamped on the frame or a Florida decal somewhere on the car. However, I have seen some photos of cars with a Florida assigned VIN decal attached to the frame. Not sure if that was a requirement before 2015 or if it's required now by the State of Florida.
Herb