Call Skyjacker in West Monroe, LA. I have a 69 4 X 4 and a 72 Jimmy and have Skyjacker 4" lifts on both. They are awesome and ride so good.
http://skyjacker.com/
I got the kit with new front and rear springs, shackles, front and rear shocks, front steering stabilizer and everthing. Make sure you ask for the frame bushings that go in the frame on the rear mount of the front springs. They do not come in the kit and they are only $25 extra