what size of heater hoses? (searched)

I'm replacing the heater hoses on my 91 4.0. I DON'T want to pay the dealership prices, so I'll buy some generic hose by the foot from an auto parts store.

What are the sizes of the hoses coming off the actual heat exchanger? I'm talking about the two hoses coming out of the firewall.

What are the sizes of the two hoses coming out of the engine bloc?

Thanks!!

I still have the factory ones. The 2 coming from the firewall to the heater control valve are 11/16" The other 2 coming from the engine to the HCV, are 5/8".