I currently have 2.5" spacers and z71 coils on the rear of my tahoe with 3" extend sway bar end links and Bilstien 5100s. The front is 3" knuckles. I am looking to go more but at what point do I need to look at longer rear control arms, Driveshaft (longer or shorter?), and pan hard bar?. This is a 2wd Tahoe by the way so no issues up front.