Greenville NC area here. I have 7 Broncos.
Buddy of Mine near Washington NC has around 15 Broncos, with one that runs, a couple that could be saved and the rest of them in various stages of decay.
Maybee 10-12 years ago there was an informal group in the Triangle area that would get together for social events and a wheeling trip to UNF. MEB used to have an event at UNF back then called the Shoot Out that some of us would attend. I met up with some folks from MEB at Super Celebration last year and asked about the event and they didn't have any clear plans on perhaps in restarting it.
Out of that informal Group back then, Jabo76 and Trekgurl are still around, the rest I don't hear from much anymore