Seems as though there is a lot of confusion/misinformation regarding the need for new aftermarket upper control arms when you lift your Tacoma.
I've got a 13 Taco dbl cab TRD OR that I have been researching lift/s information on pretty much since I bought it about a month ago. The vast majority of everything I read said when you go over 2.5 inches of lift you need to also get new UCA's or you Taco won't align properly and it will drive bad and or wear the tires out.
I just seconds ago got of the phone with ICON Vehicle Dynamics and he told me UCA's were NOT needed for the lift height, 2.75-3.0 inches, I was looking at. The ICON tech I talked too said I would have NO problem getting my alignment, caster, camber, etc., set properly with their lift in the range I was looking for.
For my needs the ICON Stage 1 with their AAL's would be perfect and I could easily get the 2.75-3.0 inches of lift I needed to clear the 255/85/16 or 255/80/17 KM2's.
He did say that if I was looking to seriously off road my Taco that then he would maybe recommend the UCA's as it would give me more range of motion but in the lift height that I'm looking at that would pretty much be the only reason I would want to replace the factory UCA's.
I truly appreciated his honesty because he could have easily said I needed them and sold me something I didn't need. Instead, he saved me about $800. When I get ready to order my lift, it will definitely be an ICON lift.