Check out
www.okmustangs.com. They are a large, active Mustang Club in Oklahoma City (their address is Mustang, OK). I have seen lots of their cars, I caught one of their shows at the Perry Airport outside Perry, OK one time when I was in Oklahoma.
These are not just a bunch of old guys with old Mustangs, there are Mustangs of all eras, some restored, some stockers, some really modified late models.
Most Mustang Clubs would love to have the young Mustang guys join and become active. We have a few in our club, my son included. He is trying to get his buddies to join up and become active. It is good for the Club and for the young Mustangers. You can learn a lot from us old guys, and we learn a lot from you young guys. The whole idea is a bunch of guys who love Mustangs!