that's a good kit, several trucks on here are running it...Im in the process of piecing it together for mine right now.... (have the revolvers, still deciding on aal and UCA's)
couple of things to keep in mind with the kit though are:
1: gonna need extended brake lines (sold separately)
2: Some trucks have trouble with the driveshaft hitting the crossmember. (some do, some don't)
3: going to need to extend your rear diff breather ($20 in parts, not bad at all) (DIY on here somewhere)
Now, the wheel and tire combo is where your gonna have problems. 3.75 backspace with 33s is going to cause significant rubbing problems... Snickerdoodle, on here runs that combo buy with a body lift, suspension lift, and lots of trimming. drb runs 33s on wheels with a 4 in. backspace, w/ a body lift, pml, and lots of trimming. Most people elect to run 33s either on stock backspace, or at the lowest 4.75 backspace.
heres a link to those build threads, so you can check out the trimming