I agree that Maximum Motorsports has great instructions available for printing right from their site, I don't like their recommendation on spring removal........it's a little, shall we say..........dangersous I would suggest using an external spring collapse tool and an air gun..........it's a much safer way to get springs in and out.
I think I got mine at Sears.
Uppers are a piece of cake once the springs are out......just four bolts and viola'.
If you are already lowered, you really dont need a spring compressor, just unbolt the quad shock and the strut and then push down on the axle while pulling the spring out. It was a little hard getting the stocker out, but its a piece of cake with my c springs.
the uppers are a pain but not too bad. you will want your lowers on to do the uppers just so the rear end doesnt vear too far from where it needs to line up.