ClassicCars.com and Fleming's Ultimate Garage are two strong sites for unique and classic car enthusiasts to buy from. These sites keep listings of classic cars for sale, trade some themselves and also list unique cars.
ClassicCars.com is a site where new and used classic cars, some refurbished, some listed on the site and some for direct sale are available to peruse. Each car is provided with a description detailing condition and location.
Fleming's Ultimate Garage is a specialty garage hub which collects listings for classic and unique cars. Some are hand-built, while others are factory made, making it a good place for hobbyists who know their fields to shop.