Each series provides a low cost base level model and a more expensive step up model. In the Plymouth series you could purchase a base Deluxe or the Special Deluxe with more options. Also, these trim options were limited to certain body styles. For example a Special Deluxe was not available in a 2 door Sedan Body style. On the Dodge D24 you could choose between the base Custom or plush Deluxe. Check the Reference and Spotters Guide pages for complete listing of the models, including production numbers.