Sp as far as ac goes I'm have almost no knowledge. I'm hoping I hook it up and get it charged and it works. Plan B is......ya, still working on plan B. Plan C is to upgrade it to a modern ac unit if that is even a viable option. I've got most of the wiring figured out. Going to put it back together and get the shims figured out so the gaps and panels are the same and smooth then take it back apart and paint. Once I get the engine in I'll test everything including the ac and then when it's back apart fix the ac. Hey look at that, a plan coming together, lmao