We found that a lot of hot rod Fits Mustang II cross members utilize mount spacing for Fits Mustang II rack and pinions that mount via a center to center measurement of 16". Most aftermarket Fits Mustang II rack and pinions are manufactured for a 15.5" center to center mount. This bushing set allows you to install an aftermarket Fits Mustang II style rack and pinion assembly on nearly any of the many Fits Mustang II style cross members found in the hot rod world today. If you are upgrading to a new power rack or even just replacing a worn out one - these bushings are a simple solution, to compliment any level of install or upgrade - saving you valuable time and money! Drilled, offset Delrin bushings. Simple solution for common Fits Mustang II suspension setups. Hardware included. Sold as a pair. Note one pair includes 2 ea mount bolts and 4 each bushing halves. 1 pair will function to mount one rack/pinion assembly. NOTE: These bushings are not designed to raise or lower the rack & pinion.