So if you have a maverick that came w/ ac from the factory, but you want to install a more modern compressor.....lets say you just wanted to install a 5.0 from a mustang w/ it's compressor. What changes would need to be made?
I did something like that -- but used the '72 V-belt accessories. My '72 Mav 302 came with AC. I bought an underhood kit from Classic Auto Air that included a Sanden compressor, mounting bracket, hoses with one end crimped and a collection of fittings for the other end. They don't list a kit for the Maverick but they put one together based on the Mustang kit. They rebuilt my dryer (but you can get one cheaper from RockAuto that almost fits), refurbished my evaporator, and had a condenser built to fit on in the stock location/mounts. Wish I had requested a parallel flow condenser rather than the serial flow one I got. Used a new stock expansion valve and charged it with 24 oz of R134A. Works fine. I'm sure they could fix you up with a serpentine belt compressor and bracket if that's what you need.
I used a universal kit, wasn't sure if a dedicated Mustang kit would (or not) have been more trouble...
I would think you could use the 5.0 A/C mounting brackets and plumb from there. I had the Kit under the hood like Earls (same installer). later I lowered the compressor. we lowered Earls the same way...once you get the compressor mounted the rest is just bolt on...
If you use the 5.0l serpentine brackets and the compressor that fits that engine(Mark 7 is different) then it's fairly simple to install it on any system you decide on. Doc's Blocks has the manifold connectors should you need it and our local radiator shop can build the hoses.