The Chrysler 300 "letter series" are high-performance personal luxury cars that were built by Chrysler in the U.S. from 1955 to 1965. After the initial year, which was named C-300, the 1956 cars were designated 300B. Successive model years were given the next letter of the alphabet as a suffix (skipping "i"), reaching the 300L by 1965, after which the model was dropped.
The 300 "letter series" cars were among the vehicles that focused on performance built by domestic U.S. manufacturers after World War II, and thus can be considered one of the muscle car's ancestors, though full-sized and more expensive.
The automaker began using the 300 designations again for performance-luxury sedans, using the 300M nameplate from 1999 to 2004, and expanding the 300 series with a new V8-powered 300C, the top model of a new Chrysler 300 line, a new rear-wheel drive car launched in 2004 for the 2005 model year. Unlike the first "letter series" series, the successive variants do not feature standard engines producing at least 300 hp (224 kW), except for Chrysler's current top-line 300C models.
The 1961 300G saw another restyle. The grille, formerly wider at the bottom than the top, was inverted; the quad headlights, formerly side-by-side, were arranged in angled fashion, inward at the bottom, in a manner reminiscent of 1958-1960 Lincolns, 1959 Buicks and the 1963-1966 Rolls-Royce Silver Cloud Mulliner Park Ward coupe. Small parking lamps below the headlights were likewise slanted and V-shaped, and the front bumper was canted up at each end, scoop-like. At the rear, the taillights were moved from the fins to the tail below them, and the fins were made sharper-pointed. Power windows were standard.
Mechanically, the cross-ram "short ram" and "long ram" engines remained the same, although the expensive French manual transmission was dropped, and replaced by a more reliable and still expensive Chrysler racing manual transmission (referred to as 'option code 281'). There are currently only five cars with this transmission. Code 281 cars may have been built for the 1961 Daytona Flying Mile, although like the 1960 F Specials, no specific records were kept by Chrysler. Unlike the 300F Specials (which were randomly pulled from the line and upgraded for the Flying Mile), the 300Gs had a specific build code (281).