Singer's unbelievably detailed restorations of classic Porsche 911s are each custom-made to a buyer's specification. They retain the shape and feel of the old cars but offer modern supercar performance and comfort. Base Price: $350,000-500,000 (est.) Engine: 3.8-liter flat-6 Horsepower: 360-400 hp @ 7,500 rpm 0-60 mph: 4.0 seconds (est.)