I do not think there are any crews in Miami per se anymore. Back in the 60s and 70s the Miami Beach/North Bay Village was a huge hotspot, but if you look at where the crews are active now, it's moved up to Broward and Palm Beach counties.

The Trafficantes had a Miami-specific crew up until the early 2000s, but even at that point a number of them lived up in Boca/Pembrooke Pines/Lauderdale area