Chrysler first introduced the 300 Letter Series for the 1955 model year. The 300 Letter Series was a range of performance focused luxury cars. The first variant offered was the C-300, named for its 300hp engine, later variants would be known as 300B, 300C, etc, with each year given a different letter until the end of production (The letter "i" was not used). The Chrysler 300 Letter Series represented the top offerings by Chrysler during its production, as the Imperial had been spun off into its own make. The 300 Letter Series was built in eleven variants: C-300, 300B, 300C, 300D, 300E, 300F, 300G, 300H, 300J, 300K, and 300L. Chrysler would later introduce the 300 Non-Letter Series, a less expensive follow up to the 300 Letter Series, as well as the more modern Chrysler 300M & Chrysler 300.