I'm so so sorry to hear that. Lucky it didn't get damaged. I had to get an approved alarm and immobilizer fitted as a condition of the insurance. It is a Cobra and cost 180 fully fitted (they also removed the unapproved one for the price) , and it has a remote fob and also controls the door locks - very nice. I'm afraid that any car that nice, expensive or unusual gets noticed by the bastards. The other thing you could do is keep a bit bull in the back the ultimate any theft device.

PS make sure that the alarm is fitted by an industry approved fitter and you get a certificate from them as this can be sent to your insurer which will reduce the premium.