Swapped in UCAs and coilovers from a 2020 Tacoma TRD Offroad to complete my latest suspension setup (installed new 4Runner 4600s p/n 24-186049 on the rear a couple of weeks ago).



Notes:
- Installing coilovers is (obviously) much easier with the UCA removed.
- 3rd Gen Tacoma UCAs are plug and play on 4th Gen 4Runners.
- Steering is noticeably tighter with much less drift.
- Battery removal is not necessary to install the driver's side UCA. The clearance issue when sliding the long bolt forward comes down to fractions of an inch and involves 1) the bracket holding the cabling to the positive side of the battery and 2) the tray itself. Just remove the 10mm bolt holding the bracket and swing it out of the way as shown in the pic below. Then undo the battery hold-downs and lift the battery & tray just a smidge and it will clear.



- The FSM calls for a new castle nut and clip to attach the UCA to the knuckle. I debated this, figuring the old ones would almost certainly be fine. Found out I could get new nuts & clips for $6 at Cobb County Toyota and decided it was a good investment considering the consequences of a failure, however unlikely it might be.



- These LED lights from Home Depot (link) are very handy for working on vehicles. Note one hanging from the fender in the wheel well shot above. There's a magnet in the swingout hook so it can be attached in many places where good light is needed.