In 1928 Chevrolet had two vehicles with a rumble seat. From the introduction of the 1928 to approximately mid year they had a Sports Cabriolet which looked like a convertible but had a fixed top. At midyear they introduced the Convertible Sports Cabriolet which was the first true convertible by Chevrolet. Body color was red. The instructions on how to lower the top are on page 26 of the April 1928 CSN. Both of these vehicles had a rumble seat. The capacity for both vehicles is listed as 2-4. 
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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