Water Pump Fittings

I’d look for one that shows the bushing (threaded adapter) although you don’t need it, like this one
https://www.oreillyauto.com/detail/...c201250/4608162/1969/plymouth/barracuda?pos=0

Also if you look at the pictures you can see the difference. Oreily had two pumps listed for a 69 Barracuda with a 318. If you look at both you can see the difference. The difference can be seen in both the diameter of the hole and the space around the hole.

Alan