I bought a 1998 Panoz AIV Roadster and absolutely love driving it. It's not the most practical car, but it's sure a rush to drive and it attracts an unbelievable amount of attention. The convertible top is useless cuz you can't get into or out of the car while the top is on. They have only made 235 of the cars (production stopped in 1999), so it's pretty unique.
I also have a 1965 Sunbeam Tiger which is another small car with a V-8 engine.