I can't directly answer most of your questions, but I will point you to the Eaglepedia where you will find a copy of the 82/82 Technical Services Manual (TSM), which is the official repair manual used by AMC technicians back in the day. You can also find used print copies and CD copies of the various years on eBay.
Look towards the top of this page, and you'll see a medium blue button labeled "EPEDIA." That will take you to the Eaglepedia index where #8 is the 1982 & 1983 TSM. Much better than the Haynes or Chilton manuals. Good luck!