I'm on a 2.5/4.25 drop with my '02 z71. I did 2" drop shackles and took out the lift block (2.25") and torsion keys up front. The front end feels pretty squishy after lowering with the torsion keys, so I'm going to get McGaughy's spindles in the spring. Check the spacing between the axle and the frame...you may need a c-notch to go that low if you still want to tow/haul anything significant. You have to buy the torsion keys - but if you went with spindles (2") you could do the final inch of drop using the stock keys. I installed everything myself and got all the parts from www.streetbeatcustoms.com but there are other choices as well.Originally Posted by proc32
edit - in my sig pic it is only a 0/2 drop.