The Japanese say torque vectoring reduces steering effort. The Germans will tell you that these trick differentials increase dynamism (whatever that means). And the Americans—just now getting started ...

Begin final setup assembly by oiling the rear pinion support bearing, side bearings and races, bearing cap holes, spanners, and all case threads. For initial setup, use a .019-inch-thick pinion shim, ...

Installing new gears and differentials is one of those jobs that even skilled mechanics and fabricators typically don't like to tackle at home for many reasons. Setting up gears requires specialized ...