Heater coolant diverter and LS water pump, huh??

['68 Newtricks]

Hey folks, hoping to get some help and maybe mounting pics of this set up. Here's the pictures so we know what I'm talking about, then the question afterwords.





I'm trying to tie in my Old Air Products coolant diverter valve into the coolant lines from the water pump. One of the water pump lines is larger than the other, so I'm not sure how that hose is going to connect. Is there a way to pull the nipple off and put a smaller one on? Also, is the larger nipple out and the smaller nipple in? I don't know how these work, my SBC no problem, but the LS is new to me.

Lastly, does anyone have pictures or experience in mounting the valve? I'm thinking against the wheel well but it's not the prettiest spot. It seems good for hose routing and the electrical plug.

Thanks