Agree with tucsonwt above, that's the first decision to make. Mine didn't work when I got it either, but all of the parts were intact, and mine looks like it has been converted to R143a. I've been working on mine this week and it still doesn't work, but I'm addressing that this weekend. There is a ton of information out there, but here's a couple of threads to reference:
Any AC compressor conversions for R134A?
and this one from another forum:
A/C How I Did It
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My wife told me I spent too much time on Facebook. So I bought an old truck. Now she wishes I was on Facebook, it was cheaper.
