Sounds like your're describing the, 48-53 Dodge B Series Trucks. Alot of people call them "Pilot House" Dodges. I had a 1950 Dodge 2 ton, Holmes Wrecker, a few years ago. Check out, www.pilot-house.com , for more info.
Spanky Hardy Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers