I'm the president of Pantera International, the first Pantera club, and only international De Tomaso club. We're not too far away. I was born in Torrance, my wife Debbie was born in Culver City. We're currently located in Ventura. As club president I'm also the forum administrator (its just Debbie and I, Pantera International is a mom & pop organization).
You've come to the right place for guidance. There is lots of past info stored here, and members who will respond "live" to you inquiries within a short time. If you ever want to hang-out and pick my brain shoot me a message and we'll plan a get together. I enjoy hanging out with De Tomaso enthusiasts. The drinks are always on me.
As a fellow California resident, living within one of the zones that requires bi-annual smog inspection, I wouldn't own a Pantera newer than 1974.
If you want to meet a bunch of other owners I suggest the Concorso Italiano in Monterrey, which occurs in mid-August. I will get an advertisement for the Concorso posted very soon.