Couldnt find an AC forum so I am posting here. 77 Z28 with original 350. My AC sprung a leak a few years ago. Car is all original and I dont want to change to anything aftermarket. System is currently R12 and I do have freon, however I can find anyone that is willing to do R12 work. They all want to convert it to aftermarket. I do much of my own work but am not good with the AC stuff. Anyone know a shop in the Dallas area willing to keep everything OE? Suggestions?