Quote:
Originally Posted by Bad Luck
The 2wd upper control arms are longer than the 4wd upper control arms. This causes the rear pinion angle to be different. Because the 2wd and 4wd rear driveshafts use a different design (and amount of u joints) the 2wd driveshaft requires the rear pinion to point further up compared to what the 4wd driveshaft pinion angle is. If you don't change the rear upper control arms you will have a vibration.
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Ah, that makes sense but both of my 4runners are 4x4 so I should be good. Thanks
