I have the 2" lift from AC, (KYB & Bilsteins). Had it for 7 years now???
Had no issues, although it is loosing it's 'lift' now. You will find the struts will 'top out' for the first couple months when you first get it in, when you go over speed bumps and such too fast... once everything settles some, that should go away.
When I was researching, it was pretty much unanimous to get the KYB in the front. As for the rear shocks, the recommendations for Bilstein slightly out weighed those for the Rancho... from what I gathered both were good, but bilsteins seemed to have a longer life.
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