As stated above, Zone/BDS have the option for 3” or 5” rear coils. Not all trucks are the same, some trucks the rear sits up 3” higher from the factory and some may not be so much. Measure your front fender height and rear fender height and see what the difference is. Then decide if you want the truck to sit level or be a little higher in the rear. It’s nice that these lifts give you options.
I have the 6” BDS, it’s been almost a year now with no issues at all, no squeaks or anything. I had them install Bilstein front 6112 coilovers and Bilstein rear shocks with Zone upper control arms. The coilovers gave me an additional couple inches up front so I went with the rear 5” coils. I bought mine from a BDS dealer and he gave me a great price imo.
Zone is also a good lift kit, lots of members have that kit here with zero issues.
Procomp is also a good kit, the only thing I didn’t like with it was that it uses 4.5” tall rear spacers for the lift versus new coils like Zone/BDS. However, procomp has the best rear control arm drop brackets, plus they have the front kicker bars. Procomp also includes stainless braided front brake lines just like BDS does.
Rough country also uses rear spacers.
We have members here with Superlift kits as well, no problems.
We have members here with all these kits, I don’t think any of them have problems with the kits, it was more installation issues.
Here’s my BDS