i just did the fronts yesterday (got dark so i have to do the back later) ... it was a bitch too, i'd just pay the 75 bucks or whatever unless your interested in learning.
a rachet set (metric)
a wrench set (metric)
a lot of time.
Don't forget the Spring Compressors...and a TORQUE Wrench!
(and my foot helps too!
***When I did mine, it was a matter of just getting used to the 7th Gen...vice all the Nissans I used to work on...
The front was easy...the back, a little annoying because you have to yank out your rear interior to get to the shock towers!
***OH yeah! Don't forget to tighten the lugs on your wheels when your done...I heard somebody here forgot to!!!