Come down to Miami, there should be a few on 36th NW street just north of the Airport. Think Alteon has one, and theres another right next door next to Curtis Ave that has some classic level C and D sims(dc10, 747, etc)
Theres also Pan Am, and Airbus. Alteon is owned by Boeing.
I flew the Level C and D 757 sims at Alteon, time of my life.