Classic car dealers and online retailers sell the Mustang GT 390 with the fastback style of body, meaning its roof line slopes down at the back. This model was a first generation model of Mustang in production from 1965 to 1968.
As of 2015, CarsForSale.com lists numerous Mustang GT 390 models for sale, many of them with the fastback roof line. For instance, Silverstone Motorcars in North Andover, Massachusetts, has a 1968 listing with manual transmission.Tradernet Classics in Calabasas, California, has a 1968 version with automatic transmission and low mileage. Flemings Ultimate Garage in Rockville, Maryland, features a 1967 GT 390 fastback with automatic transmission and after-market modifications.
ClassicCars.com also lists several dealers selling the GT 390 with the fastback roof line. For instance, Overstreet House of Cars in San Jose, California, has a 1965 Mustang that has been fully restored. Black Tie Classics in Stratford, New Jersey, lists several Mustang GT 390 fastback models. ClassicCars.com also features listings from private sellers.
CarsOnline.com is another website that curates ads for classic cars, including the Mustang. Orlando Classic Cars in Florida has a 1965 version that is fully restored and that has a high performance engine. CarsOnline.com also includes listings from private sellers.
Many private sellers list directly on eBay.com. Consumers can find everything from a fully restored Mustang GT 350 to salvage models that need extensive work.