Some pics and vids of my mock-up with the 7189 pump and a few measurements.
This is all just tack welded and will be reinforced later when I have my entire accessory drive system finalised.
One pic shows the length of the pump itself.
The others indicate relative measurements of the front and back of the pump as measured from the machined surface on front of the block where the timing cover seals to.
The videos are just easier than a static photo for getting a visual of where the brackets are mounted and their shape/size of each section.
On this engine, the AC pump is set up to be driven on the rear-most V-belt.
Whether or not this is useful to you, I have no idea. But hopefully someone can benefit.