No tech here just funny. My 89 Crew cab is empty. R-12 system of course. I am calling around differnt places that list A/C service and repair to get quotes on conversion and refill. 1st place says around $200 2nd place says $150 plus R-134 3rd place $125 4th place $250 My wife says laughingly call Bob Williams (stealership) so I do. He says he has to call me back so i give him my # 10 minutes later he calls back and tells me with materials and labor. $1800.... WTF I almost started laughing at him on the phone but I just said thanks and hung up. That is just rediculous.