it's to easy to steal, the hood doesn't even lock. I used to put a chain and lock on my hood and a ooga horn on the door button for the interior light, that will shake them up. the club on the steering would help, you could put any of the alarms on it, but there's no Way to keep them out and getting your stereo. I advise you not to put a expensive one in it..
Buy an MSD 6A or 6AL box and follow the instructions to rig it as a theft deterrent. There is a wire that if grounded won't let the car start, you use a rocker switch to control it. I was pretty impressed and plan to use it to supplement the S&W Model 629 .44 Magnum I use to protect my 67 Mustang.