Since I dont know a whole lot about A/C's, I decided to breakdown and take my 73 Centurion to the local A/C shop on the recommendation of a friend that has had quite a bit of work done there. Had them check it out and came back with a bill of $880. Was told that the compressor and VIR valve leaks R12. This quote included the conversion to R134a. I asked what the price would be excluding the conversion and was told $800. Does this seem like a reasonable price? Parts would all be new, not remanufactured, with a 12 month warranty on the system. See the thread below entitled "Compressor Thermal Limiter" for some pictures of the AC system along with some problems that occured when running it. I'm not able to post links yet. Is this a fair price for the work being done? Do I have any other options than replacement of these parts? Can you have a compressor reworked? I would like to keep everything original if possible. I read a thread here that talked about replacing the compressor shaft seal on the A6. Could this leak be the leak that the shop is talking about? If so, I might could get away with a seal replacement rather than a $400 compressor. How bout the VIR valve? Where is it located in my A/C system? Sorry for all the questions. I'm kind of lost when it comes to air conditioners, but would be willing to learn. I can't afford to fork out this kind of money now.