VIVA99 The main ones were decentralized division management, a total redesign for all makes as soon as possible, and an ambitious program of plant expansion and financing. The 300 dominated NASCAR in 1955-56, and might have continued to do so had the Automobile Manufacturers Association not agreed to de-emphasize racing after 1957. But it was worth the expense, boosting model-year volume to over 150,000 units and bringing appearance up to par with performance at last. Dating from 1934, it would remain in production until the breakthrough hemispherical-head V-8 of 1951.T. Keller, in 1935. But engineers continued running Chrysler with Keller's wholehearted support.|The #1 Slot Wide Mistake, Plus 7 {More|Extra} {Lessons|Classes}