I'm trying to devise a way of locking up the car, believe it or not. That other car that was stolen, the purple 73, has left me a bit freaked, and has exacerbated the fear I've always had of the same thing happening to mine.
I started thinking about what would be really theft resistant. Alarms, for instance, I don't think are worth much. They'll freak out amateurs, but pros will disable them before they even touch the door. (As Axel Foley said, I've been known to fracture a law or two, and in my misspent youth I bypassed more than one such system.) Steering wheels locks...cut with bolt cutters. Fuel and electric shutoff...winch the car onto a rollback.
So, what I came up with is this. Dig a hole in a garage floor and sink a huge steel post into it. Fill the post with concrete, and pour concrete around it. Weld some big honking chains to that post, something on the order of two inch links. BAck car up to post, wrap links around the rear axle, and secure. They can yank on the car all day long, but it's not going anywhere.
...except, the weak link in this is "how does the chain get attached to the car securely?"