The new Chrysler winged body by Virgil Exner was given to the 300C in 1957. There were annual changes, the letters went '300D' and '300E'. This was replaced for 1960 with the 300F that got a more powerful 6.8-litre 'Wedge-head' V8, and a new unitary body. For 1961 the Exner fins were extended forward almost to the windscreen, and the 300G was offered as a hardtop or a convertible with a standard 6768cc wedge-head V8 which in standard form gave 375bhp, or in Ram Air guise 400 bhp. The 1962 '300H' saw the wings flattened down to the waistlinbe (belt line). Also for 1962 a new line of 'non-lettered' cars was unveiled as the 'Chrysler 300', based on the lowly Windsor platform, and offered as 2 and 4-door hardtops, 4-door sedan, and convertible. The 1962 300 was offered with a 6277cc 'Firepower' V8 of 305bhp, or a 380bhp version of the wedge-head V8. Unfortunately this cheaper car also seemed to cheapen the 300H and sales fell away. 1962 cars were also 4-inches shorter as Exner responded to a rumour that Chevrolet were down-sizing all its cars; in fact the only down-sized Chevrolet was a brand new model. Cost-cutting was the order of the day for 1963, although the 1963 cars did get a new body; the 'Forward Look' was now behind. Virgil Exner had been fired for the miscalculation over the shortening of the 1962 cars, done in a panic, but when Elwood Engle took over he said there wasn't enough time to change 1963 designs and anyway he liked what Exner had signed off. So the 1963 cars were the final Exner designs. 1964 cars were only slightly changed from 1963, and the 122 inch 300K sold 3,000 hardtops and convertibles compared to just 400 of the 300J. Sales of the Chrysler 300 with its four body styles were also up for 1964. For 1965 a new Elwood body took over on both the 300 and the 300L, and in 1966 the 'letter cars' ceased, leaving the more ordinary models to carry on the '300' badge.