; Kits include hard-to-find items needed to assemble Ford 9 center sectionsContains:; Housing gasket; Pinion shaft seal; Nine pinion support shims consisting of one each .005, . 006, .0075, .0082, two .004, and three . 0105; Eight pinion pre-load shims for use with aftermarket aluminum pinion supports consisting of one each .005, .006, . 0075, .0082, .009, and three .0105; One pinion housing O-ring; One 3/4 -20 Ford pinion nut