I'm in for answers for this question as well!

 

Sub'd. I'm interested in the deavers as well.

 

for the money, i would just save a bit more and get the full leaf springs. Deaver is a good company, but they wont help ride at all. it will make it firmer and i assume you have the 1.75" rear blocks, so you may gain a tiny bit of lift..

you can install them yourself, you should get new U-bolts and Center pins (if the kit doesnt come with them)..bolt them to the spring pack

between the axle and spring ( i say that because someone a while back put a lift block on top of the springs and couldnt figure out why they didnt get any lift)

 

I put in Deaver mini packs about two years ago on my 2012 4x2 1500 Sierra and added Fox 2.5 shocks. It made a huge difference in ride quality plus it retains good load handling. I only haul 500 pounds max anyway and it drops about 1" or at least less than 2" when I do. The mini pack adds to the stock leafs curvature to give about 1" of lift and then they supply a 1" lift block I believe. I got them to send it without the 1" lift block and with the correct U-bolts. 1" lift in the back leveled my truck perfectly with the 3" lift from a Fox 2.5 coilover and Camberg upper arm I installed in the front.

The truck takes the bumps way better now and actually tracks straight when hitting studder bumps and pot holes on the logging roads I drive on. It almost never engages the stability control now where as stock it always side hopped the rear end.