IMO you don't want to go near a R-12 unit. Call a local A/C shop and ask them how much it would cost to charge it. Yeah, I know R-12 works better than 134 but it ain't worth it. Get as big a condensor as you can stand. That's where the heat exchange happens, so bigger is better. I went with an aftermarket unit as I was told that once a "system" was opened the clock started ticking and open unit components go bad quickly. I installed the A/C for the little woman, she didn't care how much it cost or where it came from BUT it sure as heck better work.
