Aftermarket A/C systems

Anyone had any experience with adding aftermarket a/c to their ride? It's not an a body but I've got a pretty sweet 83 ram 2wd pick up that I'd like to add a/c to. I've looked around some but can anyone suggest a budget friendly company for this. Also how well does it work if anyone has knowledge. I'd hate to pay out a pile of cash and it looks like crap and doesn't cool well. Thanks in advance.