The Yukon Chrysler 8.75in dropout assembly for 489 case includes a fully assembled third member with a Sure-Grip clutch-type limited slip differential, 3.55 gear ratio and 30-spline axle output. Yukon technicians ship it pre-shimmed and backlashed to spec so it installs directly into the housing; the unit is supplied without a yoke. It uses a nodular iron case for increased rigidity.
Yukon Gear Chrysler 8.75in Diff 489 Case Dropout Assembly - 3.55 Ratio 30spl w/ Sure-Grip (w/o Yoke)