2002 1500 suburban z71 vs non z71

[Funnystewie]

I have a 2002 suburban 1500 4x4 5.3 liter and was wondering the difference between z71 suspension and non z71 suspension because I want to get a 2 inch lift kit and I need to get new rear springs and just want to know the difference between the 2

 

[zora]

Z71 has stiffer shocks, springs, and larger wheels.