The one thing I have always wanted to do is drive, or even have a ride in, a real GT40. My wife used to work for JW Automotive Engineering who built and raced the Gulf GT40's, then the Mirage, and finally the Gulf Porche 917's and won the world sportscar championship.
My wife used to be picked up at the bus stop sometimes by one of the managers in a GT40 and would have a problem working out how to get in elegantly in a short skirt! Jealous, what me? (of the GT40, of course, not the short skirt!)