Discrepancy between production numbers and VIN for 65 Barracuda

This is buried in one of my other threads, but since I need an answer right away, I decided to start a new thread.

I'm looking to pick up a 65 Barracuda on Wednesday and an issue came up that has me a little concerned.

I've been told that the production number for 65 Barracudas is 64,596.
The sequence number in the VIN is 174,303.

If you take into account that the sequence started at 100,001 this car has a sequence number much higher than the production number.

Does the sequence number take into account ALL 65 A-bodies? If so, that may explain it. If not, then what other reason would there be? The VIN plate looks original-- to the car.