How can you tell if your 1966 mustang is a GT?

Answer 1

Ford Mustang 1964 1965 Factory GTFFor 1964 to 1966, the car has fog lights, dual exhaust, stiffer suspension,

and front disk brakes. All of these things could be added "aftermarket" and since there is nothing in the car serial number there is no way for sure to tell if the car is a "factory ordered" GT or if someone added parts after the fact.

A way to take a good guess if it a factory GT is to poke your fingers in the holes where the exhaust hangs from the undercarriage. "Specifically, this is an extra reinforcement bracket on the forward side of the access hole. All Mustangs have the little bracket toward the rear of the access hole, toward the rear spring, but the one hole that faces the front of the car is present only on true dual exhaust Mustangs. You've got to stick your little finger in there and push up to feel it."..... quoted from Mustang Monthly April 1995

Finally, the GT had a tight ratio steering box HCC-AX (manual steering) or HCC-AW (Power Steering). Again, the dual exhaust could be ordered as a separate option, as well as the tight ratio steering box,, or added after market although few wrench heads that make their cars into " GT Clones" bother to change the steering box. So these checks give you a better idea and good guess but the bottom line is there is NO sure way to tell if a car is a factory GT unless someone saved the original order form and invoice.... there are a few more checks, and other info for the later year cars, but for that info you will have to go to our website http://www.mustangdreams.com

Answer

It is very popular for people restoring their cars to "upgrade" them to GT lookalikes in the process. There is a company called Marti auto works that You can order a Marti report in which they go back to the build records for the cars and try to determine what came on your car originally. Basically they are trying to recreate the build sheet originally used when the car was created. There are several prices for several different levels of their reports, and basically the more you pay the more they dig and the more information they have and the more accurate your report will be. I believe they usually include some interesting statistics about how many cars came with this color code/engine/tranny combination.

Answer

Sorry, Marti reports do not go back to 66. There are dual exhaust hanger mounts under the back seat with a reinforcement. No real way to tell unless the owner has original build sheet. All the information from first poster is very good. Irishmustang