A/C questions

[diabloceto]

So when I bought my truck couple of years ago the previous owner said the A/C worked but they had removed a bunch of bolts and had it unhooked and just sort of hanging there. I finally had the time to replace all the bolts and get it all hooked back up. After turning it back on poof the compressor smoked, seeing as it ain't quite hell but you can see the gates from here hot in Georgia, I really need to get some air going. Since I need a new compressor anyway I was thinking of converting to R134a at the same time. I was wondering does anyone make any kind of kits to do this or what kind of parts would I need to do this? It seems that everything else on the AC but the compressor works too. Thanks for any advice.