My car came with what I was told was called "AC installed at the port". They cut a giant hole in the passenger side floorboard to get ducts through. The hoses sagged under the pan. Big holes in the fender well. What a hack job! I couldn't wait to pull it out. I saved everything but the hoses in case the next owner wants to re-create that mess.
And I can really feel the weight difference.
(OK, no I can't, but maybe I got a rise out of somebody