I used their 2" lowering spindles on my 2002 Z71 just last Saturday. With stock, newer model 17's (and even though they claim to clear 17's), I had to cut a LOT of the lower ball joint stud and nut off to clear the insides of the wheels. I also had to trim a good bit off of the upper ball joint to keep it from hitting the cv shaft boot area. No idea if BellTech or McGaughy's require all the extra trimming to fit a stock 17" wheel, but these sure did.