So, I dropped my truck off at 4 Wheel Parts to have an ICON Stage 5 system installed. A couple hours later, 4 Wheel Parts called me to say that the front external resevoir for struts will not fit. 4WP confered and swapped pictures of my truck with ICON and Toyota and learned that the mounting bracket for the KDSS system and the windshield washer fluid were relocated on the 2012 model year 4Runner. As a result, the Stage 5 front struts will not fit. I would image that this will be a problem for 2013 trucks with KDSS too. To make the Stage 5 stuts fit, 4WP would have to cut the existing brackets and fabricate new ones. The 4WP rep told me that if it were his truck, he would use the non-external resevoir struts because the difference in performance would not be noticable. So, I went with his recommendation. I will save a few bucks with what is essentially a Stage 4 set up, but I will not get my truck back for a couple of days because ICON needs to deliver the new struts.