http://williamwareagency.com/forsale/POWER.HTM
Use the AC Sources on this site they'll have good info on the conversion.

Stan

On Thu, 2 May 2002 09:37:28 -0400 Rick Koller <rkoller@HELIX.NIH.GOV>
writes:
> Greetings a/c gurus,
>         I need to recharge my a/c with R134a refrigerant. I have
> done an achive
> search with no success. I am going to buy the  gauges to do this but
> I need
> to no the proper pressures so as not to overcharge the system. Any
> advice
> would be welcome. Thanks.
>
> Rick Koller
> '87 semi westie (not cold)
> '91 gl (not cold)
>
>