Here is a post from a Regal site that may help:
It is really all up to you and how confident you are about your skill and work, after doing things a couple of times it becomes pretty routine and easier, but the learning curve at the beginning of any project is higher. If you choose to tackle the A/C keep in mind it is a sealed system that requires extra care in not exposing the components to dirt or debris and if it leaks can give you more problems down the road as well. So are you ready?
U will need some things to make this happen, if u have freon in it the system will need be evacuated first and foremost, if not u can go ahead and start, on the na and Supercharged engine the condenser is located at the front of the vehicle. It is tucked into the radiator support. You will need to remove the front engine mounts, remove upper and lower rad hoses, catch as much coolant as possible from the lower rad hose. I normally jack the car and put on stands so i can work from top and bottom and have clearance.
Remove radiator fan assemblies, radiator, disconnect ac hard lines, if u do not have it evacuated u will b inhaling freon and pag oil when u do this! Also letting freon out into atmosphere is illegal, remove the condenser and then reverse your steps and wa-la, u have condenser again, after install the system will need to be brought down to a vacuum to check for leaks, I highly recommend replacing the oring washers that go between the hard lines and condensor, if no leaks add some freon to the system and u should b good to go, I hate doing a/c stuff cause I don't have the machine, but I have a friend who works at a shop that has one, he usually sucks it down and refills it for me if need be, a shop will probably do that for u, but they would rather u pay them to do it all.
