[mrein3]

I added AC to my non-AC truck.
I never was a certified AC mechanic but I did LOTS of AC service in a small, non-chain shop while paying my own way through college. Everything I learned about automotive AC was on the job training.
Since I have WAY more time than money, I chose to put in all stock AC parts, and adjust the stock POA to work with R134a.

I'm approaching my 5th summer running R134a with everything else stock with ZERO problems. Other than the stupid o-ring on the schrader valve on the POA leaks.

I did a write-up on it here:
http://67-72chevytrucks.com/vboard/s...d.php?t=478564

I hope this helps.