What does the vehicle identification number on 1966 ford mustang stand for?

A 1966 Ford Mustang's Vehicle Identification Number (VIN) doesn't "stand for" anything in the sense of a word or phrase. Unlike modern VINs which are standardized and globally understood, the 1966 VIN was a more rudimentary system. It's a sequence of numbers and letters that represent various aspects of the car's manufacturing information, but it's not an acronym or abbreviation.

The 1966 Mustang VIN contained codes that indicated:

* Plant of manufacture: A letter or letter/number combination would identify the assembly plant.

* Body style: Codes represented the type of Mustang (coupe, fastback, convertible).

* Engine: The engine type and size were encoded.

* Year: While not explicitly stated in a single character, the year was implicit within the overall VIN structure.

* Sequential number: A unique number assigned to each vehicle.

Decoding a specific 1966 Mustang VIN requires using a decoding chart or a specialized VIN decoder website. These resources use the known codes to translate the VIN into the vehicle's specifications. There's no single, simple "meaning" to the whole sequence.