COMPLETE 9" FORD 3RD MEMBER, 31 SPLINE, GEAR SET, 7.00, CHUNK, PUMPKIN, RING AND PINION, SOUTHWEST SPEED, PART# 603-2289 Professionally set up with proper lash Premium ring & pinion is constructed from 9310 hi-nickel alloy Pinion is precision matched to ring gear Pinion yoke is 1310 series "short" yoke; Accepts 1310 series u-joints, which have 1 1/16" outside diameter cups and measure 3 7/32" wide to the outside of the cups. Shipped in heavy cardboard box with foam to prevent any damage in shipping; This box can be used to store the gear, but it will not hold up to heavy grease