Hi Spanky...It's a Chevy. The brakes have the traditional pedal that looks loke an accelerator pedal, and an air tank mounted inside the right hand frame rail, that look to be plummed to a hydrovac type unit. There are no brake pods mounted on the rear axle.
Another interesting thing is that the top two grill bars are chrome, and the rest are painted. Never seen one like that before. Seems odd that someone would go to all the trouble of piecing one together like that. Especially an old farm truck.
Rezman