You don't even have to be a pony fan to take notice of this one. After all, there's just something instantly alluring about a 1966 Ford Mustang GT fastback that has the unmistakable shine that comes from a serious investment. And once you look beyond the paint, you'll see an upgraded interior, five-speed manual, four-wheel discs, and a performance-built 351 V8. So yes, this car is just as cool as its first impression.The customization of this Mustang is apparent from every angle, but it never loses its vintage feeling. It starts with a respray of the correct Frost Silver. You know the factory could never get it looking this good. Instead, the paint benefits from a deep luster that comes from an investment in modern clearcoat, and a professional hand applying it. So now this sliver fastback truly looks like precious metal in the sunshine. You can tell the chrome bumpers were upgraded, too, to keep up with the clearcoat shine. The upgraded 17-inch Halibrand-style wheels are also matched to this terrific paint and brightwork. And just in case you didn't pick up on the special features, the blacked-out tail panel has a cool gas cap and advertises the extra muscle of the motor. But even without these upgrades, you want this car because it's an iconic Mustang fastback. We also know you love all the correct GT touches like the fog lights in the grille, triple rocker stripe, and trumpeted dual exhaust coming out of the rear valance. See what we mean about great upgrades AND vintage style in one terrific package?!The same dual classic/modern personality happens on the inside. If all you did was peek your head in to look at the seats, you'd see a premium interior with a center console and a great "Pony" back on the seats. But the moment that you side down in the driver's bucket, you instantly can tell there has been a ton invested in upgrades. You're facing plenty of comfortable features like a modern AM/FM/CD stereo with aux input, upgraded speakers, power windows, power steering, and provisions for air conditioning. Plus, you can instantly tell there is some serious performance here, too, with the three-spoke wood and chrome steering wheel, full AutoMeter gauge package, TCP billet pedals, and the fire extinguisher mounted on the center console. Also, did you spot the extra gear in the shift pattern yet?When you look under the hood, you see that the paint is not the only thing that has a terrific shine. This V8 radiates power with the presence of the dual air topper, Pulleys, aluminum radiator, and Ford Motorsports valve covers. More than just look great, these help the get the most out of the upgraded 351 cubic-inch crate engine. While having the Windsor motor filling the engine bay of this early Mustang is already a serious power upgrade, the custom build didn't stop there. It features go-fast goodies like a Holley four-barrel carburetor, Edelbrock Performer RPM intake, Davis United performance distributor, and headers that feed the rumbling X-pipe dual exhaust. Best of all, the upgraded T5 five-speed manual transmission gives you full control over the enhanced V8 and its thunderous soundtrack. In fact, this custom Mustang is all about control. That's why you have plenty of suspension enhancements, including a thick sway bar up front, Currie 9-inch rear end, and four-wheel disc brakes. We can go over all the details of this build (including the receipts, maintenance records, and dyno sheet,) or you can also read about it in its 2003 Mustang and Ford magazine story. But either way, you already this is one of the coolest fastbacks around, and it could all be yours tomorrow if you call today!