If it was put on your car at the factory and has a

[tom406]

This "Build A Car Workshop" approach was not without risks. A friend of mine who managed a Ford line in Dearborn recalled a workers car going down the line. A real basic car, didn't even have a radio. But it DID have a radio antennae for some reason. Inspectors flagged it and checked the car, finding a radio hidden inside a side panel. Owner-to-be was fired.

Of course, it did work out sometimes. Same friend of mine ordered a full size Ford in 1970 and had his friends in the engine plant tag a motor for him that had been earmarked for an exec. Instead of the basic 429 he must have ended up with a PI or CJ spec engine. He says it hauled. That's a car whose VIN would not have truly reflected its factory-installed configuration.