I agree about not caring much about the faded paint. I was going to leave my white truck just the way it is, (super sleeper!) but think I'll just redo it white, with a nice matte black side stripe of some kind that will resemble, oh, I don't know, maybe the early '70's 'Cuda hockey stripe. Something that makes you know it's Mopar.
Which brings me to the other issue, thieves. Fortunately, most crimminals are stupid. It's a prerequisite. So they typically steel Chevies and Harley's. I wouldn't worry too much about them steeling my '86 Dodge D-150's, for instance, and doubt the first gen Mitsu's are much or a target, either.
Now if it was bagged, fuzzed, and uglied up with nekked girls or skeleton's, then they'd want the ugly thing....