i got the rustys 2" coil lift and got 2.5" out of it. its great and it clears 32's very nicely also.
rocker panel before
so actually thats 3 inches which is weird cause i could have sworn that the first time i measured it right after i put it on that it was only 2.5" but when i measured again after i had it for a little while it was 21" sure enough and i had the before measurement written down so i know the before isn't wrong. (and don't tell me the tires lifted it some because the tires were installed when i measured before the lift)
before the tires i think it was 18" to the rocker panel