Thought I’d add to the discussion since this post helped me out quite a bit. Yes the Ranchos suck, and the 5100s are night and day difference. 2017 GMC Sierra All Terrain X Package (Z71 w exhaust).
Put 5100 Bilstein’s in the back - easy enough, came from the Jeep world, this was no problem.
Used a local shop to install the front struts, set to the max setting with a 0.5” spacer to fit a wide tire. I was going for the most tire I could fit with the least amount of lift without using one of those level kits, and said a little prayer. 325/60/18 (33.4”x12.8”) on 18x10 w -24 offset. Yes I had to trim, metal and plastic, but I have no rub. Truck is aligned, no stress on balljoints or cv’s. Tires sit about 1.5” out from flare, which is not too obtrusive and give it a good stance.
I’ll upgrade the UCA’s next. But more wanted to see if the above could be done! Appreciate the thread and posts (and arguments too)!