I 'harvest' a lot of big bolts, and they seem to be 50/50 having them or not.
I never really understood the purpose of lights on the cab like that.. especially when the box behind the cab sits as high, if not higher than the cab roof. I mean, if the lights were intended to indicate the total height of the vehicle, seems like the highest point on the truck is where they should go.
I dunno.. but a '39 GMC I parted out had some sweet old lights on the cab.. old ones that probably weren't original, but were undoubetedly put on the truck shortly after it was purchased new.
I've been kind of on the fence if I should put them on my '46 2 ton. I'm really torn.. they kind of look neat.. but they also kind of look redneck.