I still have my stock A/c compressor I heard they don't make conversion parts but I am pretty sure they do. Can you just use the stock compressor and just change the lines, drain and resplenish the A/C??
evacuate, flush, new hoses and i forget the other parts. been awhile for this. they do make or can be made. dont let them tell you no.
I saw a conversion kit at the parts store that appeared to just be some small fittings. I'm guessing they are restrictors or something. I need to get my '73 Ford truck's A/C going and am curious about this as well.
I believe in order to do a correct conversion, you'd need new hoses,the fittings, use a POE oil, and possibly an expansion valve