vin decoding

I was just coming back to amend my post, you beat me to it!

It looks like the series of the vehicle is what determines the price class... For example, in 1973 a Valiant, Duster, Dart, Dart Swinger Special and Dart Sport was in the "low" price class. A Valiant Signet, Scamp, Dart Custom and Dart Swinger was in the "high" price class. The "premium" price class included the Valiant Brougham and Dart SE ('74).

So I guess you can just ignore my previous post. ;-)