Dave, Welcome!
There is a small meet at the Glen Head American Legion, just off Glen Cove Road, on the 19th. Might be a little far, but then there is also, the three clubs on LI to look into joining. They usually list the events that are upcoming, and is a great way to network for vehicles & parts. For Military Vehicle Clubs, join one or the other. Both clubs do most things together. The ATHS, is a great club for all things truck.
First, is the ATHS (Antique Truck Historical Society, LI Chapter) -
http://athsli.com/
Second, is the LI Military Vehicle Club (Suffolk, meets in Medford) -
LIMVC
Third, is the NY Military Vehicle Club (Nassau, meets in Massapequa) -
New York Military Vehicle Club NYMVC