I got my type at Reflectone in Tampa, Florida (in 1992). The firm was bought out by CAE some time back, and the sim is no longer in Tampa.
The firm the previous poster refers to is Sim Aero Training.
Here's a link in English ...
SIM-AeroTraining
Here's another link referring to Sim Aero (some distance down the page). I mention it because it mentions a facility in Johannesburg, but this doesn't show up on the actual Sim Aero site. I note the previous poster is from Johannesburg, which isn't a good sign ...
Aircraft Charter Aircraft Leasing - AirQuarius Aviation - Partners
FAA approval isn't mentioned, but if they don't have it they'd probably know of someone who does.
Good luck!