New to site, new to Mopar overheating issues

Ok yellow rose So it has a 70 up water pump, alternator brackets, and radiator based on the look of the pump and inlet outlet locations on the radiator. It has 67-69 non A/C water pump pulley and crank pulley. Regardless how this was put together it has "Factory" 67-69 NON AC diameter pulleys, and as such it requires a NON AC water pump.

I said nothing about OE tune, fuel, etc. You did. What I do know is the stock pulley ratio he has is non A/C, it needs a non A/C 8 bladed pump weather it's running a correct 67-69 style pump or a non correct 70 up pump does not matter. The pulley diameters on a non AC 67-69 small block are the same diameter or extremely close as a 70 up non AC small block, and what matters is enough flow right?

67-69 non A/C cast iron water pump 8 vane impeller
70 up non A/C cast aluminum pump 8 vane impeller

Only difference between the 2 pumps is casting design with outlet location, and material used. Both are 8 vane pumps. So regardless of what year the different pieces are the pump needs to be sized to the pulleys being used on the engine.