Exotic Car Rental/Classic Mustang

My FH and I are looking for an exotic car for our upcoming wedding (8/7/2010). What he really would like is a Ferrari, but would settle for certain Lamborghinis, Aston Martins, Audi R8, Maserati GranTourismo, Lotus. He would also be interested in a classic mustang (65-70). We have tried Gotham dream cars, Image Rent a Car, and pretty much every vendor we could think of. Gotham is the only one that could help us but will not guarantee a car for one day (only for full weekend). If anyone can provide any insight it would be greatly appreciated.

Thanks!