As the most-successful new car ever launched, Ford’s sporty Mustang was available through 1967 with the high-winding “K-Code” 289 CI High Performance V-8 engine factory-rated at 271 HP. Myriad further options from the factory allowed buyers to custom-order a Mustang to their specific needs, including the popular GT Equipment Group, available across all three Mustang body styles including the convertible, “notchback” coupe and 2+2 fastback. Thanks to an upgraded dash for ’66, GT Mustangs offered a more driver-friendly experience with useful instrumentation plus European-style grille-mounted driving lamps, ‘GT’ badging, the Special Handling Package, front disc brakes and dual exhaust system with chrome trumpets exiting through the rear valance. One of 5,469 K-Code-powered examples sold in 1966, this striking 1966 Ford Mustang GT Fastback was purchased on January 28, 1966, from John Fister Ford in Paris, Kentucky, by John Maloney of Lexington, Kentucky, who retained ownership for the next 53 years until September 2019. In addition to its original HiPo 289/271 HP engine, this very special Mustang retains such special factory components as a rare Autolite 4100 carburetor with manual choke (Serial No. C50F-L/A4KD) and an Autolite alternator with high-rev pulley. Other highlights include a 4-speed manual transmission, heavy-duty battery, GT Equipment Group and choice amenities including an AM radio with stereo 8-track player, full-length console, tinted glass and Décor Group. Supporting this highly equipped Mustang’s provenance is the original sales order form dated January 28, 1966, the deposit down payment receipt, original keys, the original owner’s manual with John Maloney’s information written on February 16, 1966, the original Ford Motor Company-issued window sticker, miscellaneous Kentucky inspection reports and even a photograph of the new car with John’s girlfriend from the fall of 1966. More recently, this very special and highly optioned 1966 Ford Mustang K-Code Fastback was featured on the cover of the Doc’s Mustang parts catalog. Featuring outstanding black-on-black colors, an added later-model hood scoop, bold gold center stripe and chrome styled steel wheels mounting period-style twin red-stripe tires, it is simply an exciting find for Mustang collectors and enthusiasts everywhere.