55.2-59 58 GMC Suburban NAPCO and Chevrolet 3166

[1project2many]

I drove by a new business in the area last weekend and spotted two TF trucks parked outside. As NAPCO trucks they were both cool but one was over the top unusual imo. 1958 GMC Suburban Carrier w/ what appeared to be an original V8, full bed, Hydramatic, and power steering. Folks might be thinking the long truck on the right similar to today's "Suburban" is the one I'm talking about, but in 1958 the "Suburban Carrier" was GMC's answer to the "Cameo Carrier."

I am curious about the power steering. The system appeared to be a Chevrolet style system with the control valve on the pitman arm and a power assist cylinder. The GMC I had years ago had a power steering box with control valve and assist piston built in like today's vehicles. But maybe the 1/2 ton Jimmy was different?