Don't Ford's still have the fuel cut off switch? I had an Aerostar that I spiced in a push button switch mounted above the glove box. You had to put your finger in the hole where the second light would be and to the right to push it. The van would not start at all if the switch was engaged.
As for the club lol they are a joke. I takes less then 15 seconds to cut through the cold roll steel of a steering wheel and remove them. I towed at lest three stolen vehicles a year with the wheel cut and the club in the back seat! It takes even less time with a set of bolt cutters!
Now punks looking for a car to joy ride in won't bother them but someone looking for your make/model of vehicle they are going to steal it unless you have installed an immobilizer switch somewhere out of sight. Don't forget tow trucks either!
Don