1958 Chevrolet Apache

All light-duty trucks from 1958 called "Apache", medium-duty trucks called "Viking", and heavy-duty trucks called "Spartan". First year for factory-equipped air conditioning. Significant redesign of front end, featuring a shorter/full-width grille, four Headlights instead of the previous two, and Parking lights are now in the grille instead of being in the front of the fender.

The hood is similar to 1955/1956 models, but with a flat "valley" in the middle. A new "style-side" all-steel bed replaces the Cameo/Suburban versions; called "Fleetside" by Chevrolet and "Wideside" by GMC, available in 6.5 ft (2.0 m) and 8 ft (2.4 m) lengths. For 1958, GM was promoting their fiftieth year of production, and introduced Anniversary models for each brand (Cadillac, Buick, Oldsmobile, Pontiac, and Chevrolet); the trucks also received similar attention to appearance, but staying essentially durable, with minimal adornment.

Description and photo from wikipedia and classiccars