I believe they will and maybe slightly, but not much at all. I've heard of people running airshocks and cranking them to rediculous psi to get more lift but I think that is pretty stupid myself, not good on the truck in so many ways.

 

im running the stock bilsteins but i have a set of superlift shocks to be put on when i get to a lift because the 2 in lift i did my bilsteins bottom out when i hop a hill there isnt enough travel but my front shocks dont seem to have that problem

 

Mine is not a zr2 but I run pro comp es 3000 they where cheaper to buy then the monroes go figure, and no complaints here they made a world of difference than the old blue.

 

I've heard good things about the pro comps.

 

I am running Rough Country's Nitro 9000 shocks. I had the stock (blue and yellow) bilsteins until 80k, when the rears seized over, and I discovered a leak in the front passenger shock. I thought you would get more life out of a set of Bilsteins...I had the stock shocks on my 98' until 140k!!! I went with rough country, because I like a firm ride...and lets face it! We are driving Blazers, not Cadillacs!!! The day I put them on, I loved the ride! I still love them 10k miles later! No annoying squeeks, nothing bad to say about them at all! No body roll, no jaring ups or downs, perfect road manners... (and offroad). They were cheap too! $40 w/ next day shipping from JC whitney!!!

 

Bilsteins

 

I put a set of KYB Monomax's and so far these are one of the most stiffest shocks I have seen. Great set of shocks.