I installed two lifts on my YJ in the street in front of my house.
Do a google search on YJ lift install and you will find sites that list the tools you will need. And step by step instructions. Read and study and use the money you would spend for a mechanic to install to buy good tools.
I did my lift by myself with no real experience, the first one I learned that good tools (sawzall, angle grinder, breaker bar BFH and the sockets and wrenchs you need) make the job much easier. WHen I did the second I had these tools and the experience
and it was a breeze.
Below is a list of the bare minmum tools
all 1/2" drive)
3/4" deep well socket 6 pt.
Breaker bar and ratchet
13/16" socket for spring hanger bolt head
7/8" socket for spring hanger nut
9/16" combination wrench
3/4" combination wrench
Thats just the bare minium. I used: All of the above, sawzall, 4 1/2" angle grinder, and a BFH. I did my first lift without air tools. It sucked ass