Kore for me is the way to go,
I went with the Chase kit which gives about 2-1/2" lift in the front and 1-1/2" in the back.
I also went with the steering stablizer and control arms.
Fits 35" tires and rides a hell of a lot better. I tow a 30 travel trailer.
If you want lots of height Kore is not the package.
onetun
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2005 3500 HO, 6sp G56,
1999 2500 CTD 4x4