Just wanted to post my experience for others looking at going through with this. I know there are a lot of posts already on it but I know when I was reading up on it the more the better.
I have a 2011 DCSB Off Road. When I first read about the rear leaf TSB and the Billsteins and realizing it was an inexpensive way to get a lift that wasn't too crazy I decided it was perfect. I've only had it all complete now for a few days but I can say this. If you're considering doing it.....DO IT!!
I was somewhat concerned about how rough the ride would be especially since I have the progressive coil springs in my OR. But I can tell you without doubt it rides very nice. The handling got way better, no roll in the corners and it actually is better at humps in the road or RR tracks where your momentum lifts the weight of the truck then comes back down, very smooth. The best way I can put feeling the bumps(everyone's main concern when lifting) is how someone else put it, you notice them but you don't care. They don't bother you. If the truck rides like it does now from new then you would never say "OMG this is rough". It's nice!!
I have them set at 1.75 and my rear is just the TSB(no additional AAL).
Here are the progression shots. Taken in the same spot from the same spot. I was kneeling down so I got a little perspective distortion on my ultrawide lens(photogs will know what I mean).
Way it was from factory.
DSC_1754 by bahn_b, on Flickr
With front Billies added and set at 1.75
DSC_1759 by bahn_b, on Flickr
With rear TSB done.
DSC_1761 by bahn_b, on Flickr
Oh....would you lookie there.......new wheels and tires for her!!!!! Hell yeah!!!
DSC_1763 by bahn_b, on Flickr
Looking at the pics it seems it's a little nose high, just ever so slightly but a few other places it was sitting it looked level and perfect. My garage is sloped a little but not much. Could be that plus could be the angle I took the pic from(low kneeling).
Again.....the ride is awesome. The look is awesome. I can't recommend it enough. I paid 175 for the Billies from Downsouth MotorSports, $150 to have them put it then the dealer did the front end alignment as part of the TSB.
The $750(including shipping) and $970 for the wheels and tires was additional. haha