I always wanted a GT40 with the head clearance bump. Bad to use for a commute to the East in the morning and to the West in the evening though.
That was called the Guerney bubble because Dan Guerney needed the headroom when he wore the ass off Ferrari at Lemans.
Many, many years ago I saw a listing of a GT-40 (or two) for sale. Some guy bought it and made it street legal. He even had to reinforce the body/fenders to make it hold up. It was very expensive, IIRC.
Tough to crawl out of that car in a normal parking space, though, with the way the doors wrap into the roof. My dream garage would still have one, though - right next to a Cobra Daytona Coupe and a Lamborghini Miura.