I really like your truck. Pretty neat seeing it has aircondititoner compressor. Those were some the best compressors dodge ever made. R12 was the very best freon ever made in my opinion. I have worked on aircondititoner systems since the prime age of 12 years old with my father who taught me well.
I've switched to HFC-152a over a decade ago and it works beautifully. Just as cold as R12 and lower head pressures too. Just flush the system and run Ester oil and charge at 52-55% capacity of the R12 recommendation. It also is less prone to leaking. Mines been running 12+ years in one car with no issues or top off.
I've got a '70 Dodge W200 with a 383 Magnum (factory) and 4 speed. Mine has a dealer added A/C with a York compressor. To answer your question, NO, those AZ carbs are trash, like most of the commercially available rebuilds. Most 'look' nice but just don't run. Best just to rebuild your own old one. I have re-bushed those carbs before. There was a company that sold kits to do it. Chicago Carburetor or Corvette or something like that. BTW, thats NOT a standard practice on those rebuilds to bush the shafts. They actually had no bushings when new. Problem with the 'remans' is they glass bead or media blast them and you NEVER get all the junk out of the small idle passages.
