Real GT, GTA or Clone? Checking a 1965–69 Mustang GT

What the GT was, and what it was not

In the 1960s the GT was not a separate model. It was the GT Equipment Group, an option package Ford introduced on April 17, 1965, the Mustang's first anniversary. On 1965 and 1966 cars it brought front disc brakes, 22:1 quick-ratio steering, a dual exhaust that exited through the rear valance, fog lamps in the grille, a five-dial instrument cluster, GT badges and lower body stripes. It also came with one rule that no amount of chrome can fake: it required the four-barrel 289, either the 225 hp A-code or the 271 hp K-code.

That leaves three kinds of car wearing GT badges today. A factory GT left the assembly line with the package. A dealer GT got its parts after the sale, because Ford released the appearance items separately for dealers to install, and Old Cars Weekly notes that the exact number of Mustangs built with GT equipment is not available. A clone, or tribute, is a regular Mustang that someone dressed as a GT later. None of the three is a crime. The trouble only starts when the third one is described as the first.

1965 and 1966: proving a GT by elimination

The early cars are the hardest, because Ford left so little paper behind. The 1965 data plate carries body, color, trim, build date, district sales office, axle and transmission codes, and nothing that says GT. Marti Reports start with the 1967 model year, so there is no Ford build record to order for a 1965 or 1966 car, and The Henry Ford holds no Mustang assembly records either. What is left is elimination, and it works better than people expect.

Start with the engine code, the fifth character of the VIN. An A or a K is consistent with a GT. A C, a T or a U rules out a factory GT, and that ends the conversation politely. Next, read the build date on the data plate. The package went on sale in April 1965, and cars carrying GT parts were being built from about mid-February 1965. A 1964½ car, or a 1965 built in the autumn of 1964, that wears GT parts got them after it left the plant. Then count the lug nuts. Early V8 Mustangs ran five and the sixes ran four, so a GT-badged car on four lugs began life as a six, and no six was ever a factory GT.

A K-code is the strongest single hint, with 7,273 built for 1965 (1964½ included) and 5,469 for 1966, but it is still only a hint.

The trim helps less than most owners think. In 1965 the five-dial cluster came with the GT, but it also came with the Interior Decor Group, the "Pony" interior, so five dials alone prove nothing. For 1966 the five-dial cluster became standard on every Mustang. The 1966 GT used a rocker stripe where regular cars wore a chrome three-bar side ornament, and its gas cap was marked "GT," but caps and stripes are the first things a clone builder buys. What carries more weight is whatever is tedious to fake: exhaust routing through the valance that looks like it has always been there, an original build sheet found under the carpet or a seat, and an ownership trail that reaches back toward the first buyer.

1967: the GTA badge and the first Marti year

The 1967 car is where arguments end early, because it is the first model year Marti covers. Marti Auto Works is the only licensee of Ford's production database, and its report lists the options a car was built with. Two cautions apply. The report shows factory options only, so anything a dealer installed will not appear, and it does not judge whether the car in front of you is the car on the paper. A report that shows the GT Equipment Group settles what that VIN was built as. Matching the VIN to the body is still your job.

Ford built 24,079 GTs for 1967. The new engine on the sheet was the S-code 390, while the K-code was in its last year with 489 built.

The GTA is the 1967 wrinkle. A GT ordered with the automatic transmission wore a "GTA" emblem on the lower front fender, inside the opening of the stripe, under Ford part number C7OZ-16098-A. Manual cars were badged GT. The GTA emblem was used for 1967 only, so a GTA badge on a 1966 or a 1968 car is wrong on its face, and a GTA badge on a four-speed car is wrong for a different reason. Reproduction GTA emblems are sold today, which means the badge proves nothing in either direction. The transmission and the Marti line do.

1968 and 1969: plates on the dash, numbers on the engine

For 1968 the VIN moved from a stamping on the fender apron to a plate on top of the dash, where you read it through the windshield, and Ford began stamping a partial VIN on engines and transmissions: the year digit, the plant letter and the six-digit serial. On a car claimed as a GT, a block that carries the same serial as the dash plate is worth more than any badge.

The 1968 trap is the California Special. The GT/CS carried the letters but was a separate regional package, built only at San Jose as a coupe with VINs beginning 8R01, and 4,118 were made including 251 High Country Specials. A GT/CS is a real car with real paperwork of its own. It is not a GT Equipment Group car by default, and a car described under both names needs both sets of evidence.

The 1969 model was the GT's last year, with 5,396 built, while the new Mach 1 sold 72,458. How the Mach 1 and the Boss cars took over is the performance Mustang story, and the Mach 1 has its own version of this problem, covered in Mach 1 or tribute. A production count that small is exactly why a 1969 GT needs its Marti Report before anyone calls it real.

Real Mustang GT, dealer GT or clone: settling it

"I have watched more GT arguments end with a VIN than with any amount of shouting. Badges are cheap, stripes are cheap, and good intentions are free. A K in the fifth spot, a Marti line that reads GT Equipment Group, a build sheet out from under the carpet: those are the things that settle it, and once they do, they settle it for good."

Wayne Coburn

A tribute that is described as a tribute is an honest car, and plenty of the best-driven first-generation Mustangs wear GT parts they did not leave the factory with. A dealer GT with period paperwork is part of the car's history too. The only real mistake is letting the story on the show card run ahead of the paper behind it.

Sources and notes

• Old Cars Weekly: Car of the Week, 1965 Mustang GT (launch date, contents, dealer-installed parts)
• MustangSpecs: 1967 Ford Mustang GTA (emblem and placement)
• 1968 Mustang GT reference page: 17,458 GT-optioned cars, citing Mustang Monthly, April 1995
• Classic Industries: 1964-1973 Mustang VIN decoder (VIN locations by year)
• The Henry Ford: finding the history of your Mustang
• Wikipedia: California Special Mustang (GT/CS production and High Country Specials)