Insure a Mk2 Cav on classic car insurance. I do it for one of my cars and because it is a second car it can go on a limited mileage policy too. If you keep the Corsa it might be an idea??
Make your car rare. Change all the badges to Vauxhall. Same car, different badges and the steering wheel is in the wrong place too. :Ha Email mark.smelt@orange.net me a picture of your car and I can post it for you if you wish.