+2, except I used the ToyTec 1.5" block and the axle shim (instead of RevTek). Truck is maybe 1/2" higher in the rear.
I stayed away from the AAL and 4-leaf spring for the same reason. The rear is still stiffer than the front with 884s, but it feels like a good mix. I expect the rear of a truck to be a little stiffer.
Here is what it looked like the day I got it all installed. The rear was exactly /14" higher. Now, 3 weeks later, the front has settled maybe 1/2" so the rear is now 1/2" to 1" higher, if that.
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'06 DC SB Sport, V6, AT, 4X4, MB Gunner 6's, Bridgestone AT, 285/75/16, 884s w/top plate spacer & 1.5" blocks in rear. TSB rear springs...
R. I. P. 
"The older I get, the better I was."