Maryland here......
The Sun City Cruisers have a pretty good Mopar representation here in Rising Sun,MD. They meet at the local American Legion occasionally. I have been to one of their meets a few years ago.
There have also been some good shows at the Big M in Churchville, MD. None of these are specific to Mopar, but you can see a few.
Ma Mopar is well represented in northeastern Maryland with the Chrysler plant in neighboring Delaware. That employee discount on cars and parts is cool!