2015 suburban ltz lowering

[BigPac]

Currently i have Ground Force 9979 spring kit sitting around, I'm thinking i can use the rear springs to lower the back 2" and looking at replacing the front spindles with a 2" drop. I've looked but do you need to add rear shock extenders? or just adjust he suspension rods in the rear? and is anything else need in the front ?

 

[Big Mama]

The front is good and at 2” in the rear I’d add the extenders and the ride height sensor you mentioned.