Classic Winnebagos & Vintage RVs

Hello all! This is my first post. I searched first but could not find the answer.

I am picking up my 1973 Winnebago Brave today. How do I fill the radiator? Does it have an overflow tank or do I just fill it on the top? I can see the pressure cap on top of the radiator and another cap that is just in front of this. I also see a filler on the passenger side of the front looking inside the hatch from the front. Is this the overflow tank fill location?

Thanks in advance.

The overflow tank is on the right side of the radiator. That would be the normal place to check the coolant level. The front radiator cap allows you to fill the radiator after draining it for maintenance or repair since the radiator cap on top of the radiator is pretty well inaccessible.