Not sure where to put this post but trying here... mods please move if need be.

What is everyone using for additional security for their cars OTHER than alarm systems? I have a garage but am looking for more protection incase anyone gets into the garage and wants to take the car... what are good companies to purchase from and where? I am looking to buy one or two things for my new 88 Iroc i just got and it is mint and dont want anything to happen to it. The 92 pro-street will also be getting quite a few security measures too.

The Club is the first thing that always comes to mind.