i have a leveled 05 sierra 4x4 with rc keys and zone shocks my question is what shocks work the best as these zones are not that great, and what do i need to lower the rear like two inches can i just remove the blocks and put new u bolts or should i buy shackles

 

you can just remove the stock 2" block and replace the u bolts.
I like my bilstein shocks

 

ok thanks for the input i will remove them soon and get some bilsteins for it. thats a nice *** truck i wish california would allow half the mods you have

 

x2 for bilstein.

great shock for the money.

i used to order from shockwarehouse.com

 

I am lucky on the performance part but the cops are real asshol.. around here for trucks being to big, I have been pulled off the road twice when I was running 40"s so thats why im down to 36"s and still not close to legal.