Possibly in the market for an A/C

I just purchased my first classic/restoration project car, a 74 Duster. It doesn't have A/C it was pretty much bottom of the baseline from factory so I am looking to buy everything I need to add A/C to the car if it isn't to hard to do.

Looking to get prices of what it would cost to do this and guidance on how. I am pretty new to not only a bodies but car work in general. I'm a rookie all around who is excited to learn.

So if anyone has a complete A/C package that would fit a 74 Duster PM please and maybe we can work something out

Thanks :)