I know it’s kind of late since you already ordered the kit, but I just ordered parts for a 2/4 drop on my 08 Tahoe. For the rear, I just went with 4” drop springs and shock relocators. I recently installed new Arnott rear auto level shocks and a Dorman compressor and plan on keeping the auto level like I did on my 02 Denali. I will be shortening the ride height links so the system doesn’t try to raise the rear up, thinking I have a heavy load on the hitch. I did this on my 02 and it works awesome. For the front, I’m cheating for a 2” drop. I will be “flipping” the bottom of the struts to the bottom of the control arms and adding a small spacer meant for a 1/2” lift to the bottom instead off the top where it was designed to be installed. I will be using grade 10 bolts and nuts because now the struts ( and front of vehicle) will be hanging from the control arm instead of resting on top. The relocation to the bottom of the control arm will result in about a 1 1/2” drop and the spacer will add another 1/2”or so for a 2” drop. Some guys have used this method combined with either drop spindles or drop control arms for a 4” or more front drop. This is a budget build and this will cost me around $300 for the whole drop and there’s no need to remove ball joints or get an alignment when I’m done. I will be detailing it in my build thread for my bagged Silverado. Link
https://www.tahoeyukonforum.com/thr...lverado-build-aka-the-machine.100281/page-297