1955 Chevy Stepside Muddy Pickup Truck. 1:32 scale diecast collectible model car. The Chevrolet Stepside pickup is a 4.75"L x 2"W x 1.75"H diecast metal car with openable doors and pullback motor action. This 55 Chevy Stepside Pickup is manufactured by Kinsmart. Assorted colors - Red, Orange, Blue, and White.