You wont be able to fit an AC compressor in the stock location...it will be into the passenger side shock tower(assuming the ecoboost compressor sits in the same place as the 3.7l). I haven't figured out an AC compressor mount yet...but I assume I will have to drop it low to match the alternator on the other side(for reference the alternator only has 1/4" clearance from the sway bar bracket, you can also see the oil filter relocated to a bracket bolted to the engine sitting where the alternator used to...even angled as it is, it barely clears the lower radiator hose. The starter cable you see on the left of the crank pulley is the only real possibility for an AC compressor mounting location to be able to clear the shock tower and LCA mounting point):Yup, she's a moose LOL... I just ordered the exact same engine stand my boosted 351W is sitting on for this "little" V6. It'll be interesting to have them sitting side by side. Yeah, Hunter has that weird oil filter elbow on his list of things to design. We are also putting a real P/S pump on it and relocating the alternator. As far as an A/C compressor, I'll probably put a Sanden S7 on it as those are my go to and Sally will be running a Vintage Air system.
I wouldn't even bother to attempt a conventional power steering pump if I were you...you are far better off with EPAS in the column if you have to have PS....the realities of working with a v6 in place of the longer v8. The other alternative is to mount the 3.7L further forward than I did...but then you lose a lot of the advantage of better weight distribution.