Early ones are different to facilitate the mounting of the power steering pump. Not a great picture of it, but if you blow it up you can see the mounting bracket on the top left of the water pump. View attachment 1716280995View attachment 1716280996
That is the exact same set up as mine as I have power steering. I went through the computer with guy at NAPA and none of them were right. When it's at the shop on Monday hopefully they can find a part number on it.
We looked under 67 Cuda with a 273, also 70 Duster 340, I gave him the codes off the 360 block. Should all be the same one would think. The ones he found had the outlet on the right side of the block where it should be on the lower left
side. Plus the ports for the heater hose and bypass should be threaded.
At least I can still drive it just not far.