On Sunday I installed new 4Runner-specific rear 4600s on my '07 Sport. As noted above, I've had 2015 Tacoma OR shocks front and rear for about 2 years and 50K miles. While I still feel the Tacoma swap is a solid choice, especially given the cost relative to a whole new setup, some owners may definitely prefer to use the 4R version of the 4600 for the rear. So far I have a couple of hundred miles on the new rear shocks; I like the ride a lot and the 4R version of the shock is noticeably beefier, something that surprised me when the shipment arrived a few days ago. Here's a side-by-side:



I still have a front set of shocks, coils, & UCAs from a 2020 Tacoma OR I plan to install up front. Those aren't a concern b/c the vehicles are nearly identical up there whereas the Tacoma has leaf springs vs. coils on the rear.