This shock hoop is a great upgrade for your Tacoma or 4Runner that gets used aggressively with a long travel suspension kit. 4d models see huge increases in performance due to the added weight of the front differential. With the addition of dual 2.5 shocks the increase in dampening and adjustability of your long travel system is second to none. You can use a secondary 8" travel 2.5 or 2.0 coilover or bypass shock. These hoops are built from 4130 Cro-Moly tubing and they include all the hardware to install the shock. We require you to specify what brand of shocks and model at the time of order. A small amount of welding and grinding is required for installation.