so a while back I got a 67 mustang and I have done a ton of restomod work to it, an issue i'm facing is the engine is too large for the ac to fit in the engine bay (and it gets 114 F in the summer)
I put a 98 Cobra engine in my 69 Mach, built my own hoses. Can take pictures if youd like. Are you using he stock Ford heater/a/c box? I have a classic auto air in mine. I made my hoses by using a stock 2000 GT manifold hose off the compressor and fabbed everything else. I had to cut the manifold liquid line to the condenser.
when you do these mods, i suggest going the vintage air route. the stock location is a tight spot for a 4.6. I ran ez-clip ( its expensive) all of it via the fender well.