nice thing about these older vehicles is that they stick out like a sore thumb unlike your average daily driven vehicle. Of course that doesnt mean it will prevent anything, but chances are the thief may think twice, or prb wont get very far unless theyre out in the middle of nowhere. One thing Ive seen is a remote switch that cuts off the ignition circuit to the starter relay and uses a remote on your key to activate and deactivate. That would be one option, ill have to look it up