Hydraulic Kits???

Hey guys, Its been a while since I have posted. but I am back now at least for a little while. I got married and had other priorities to work on the past year or so but I am getting back on my ride for good reason. Just got a sales job with stereo retailer so I need to headline things with my car. I am gonna start sprucing the car back up and get it low again.

My question: The hydraulic kits I am seeing around seem to come with everything but the batteries. But I assume I am going to have to fabricate the upper and lower mounts for my car. Is this true? I have an 01 cavalier. I know I will need to put a swivel fitting at the top of the front cylinders so that I don't wreck things with the MAC struts the car is setup with. Anything else I need and how hard of an install is it? If I take my time could I do it myself like with air bags? I am pretty handy but I certainly don't have experience on my side. Any thoughts would be greatly helpful.