Your not going to notice much of a difference between pics. I mean 2" or 3" is hard to see in a pic.
Before
After... 2" torsion bar keys and 2" shackles
If your going to lift using TB keys then you should lower your front differential (4x4 only) at least 3/4" with spacers to save your cv boots from premature wear and tear
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2011 Colorado CC Z71 2LT 4X4 3.7L
3.73 gears/Snuglid/MBRP muffler/K&N Air Filter/Air Doc intake/Supermod PTB/SuperSparks/Z71 decals removed/4" Rancho Lift/Rancho RS5000series/ProComp 17" Alloys/285 70 17 Goodyear Duratracs/5000k HID lows and fogs/LED DRLs,tails,reverse lights/Super 2nd apply servo/tanny cooler/PCM tuned by Justin @ Black Bear Performance/Off road club #3/Lifted Club #440