 The ring-and-pinion gears...  The ring-and-pinion gears are rotated to check the carrier's preload. |  A dial indicator is used to...  A dial indicator is used to check the backlash on the ring gear. Checking backlash and preload help prevent premature failure and provide a quiet ride. |  Using a rear support cover...  Using a rear support cover helps prevent deflection of the main caps. "You want to make sure you don't oblong the main caps with the support hardware," says Scott Marrison of DTS. "You only want to support them and not crank down on them." |
 UPR told us that a car with...  UPR told us that a car with 500-600 hp really needs to use its Pro Series chrome-moly adjustable upper and lower control arm kit, along with the Pro Series 7075 billet spherical housing bushings. |  We thought we might try them...  We thought we might try them out, but everyone we talked to agreed that the solid bushings would be noisy, so we opted for the urethane-equipped units on the right (PN 2007-8-KIT, $269.95). We'll hold on to the Pro Series pieces for when we decide to get truly serious with the Pony. |  Our DTS rear-axle assembly...  Our DTS rear-axle assembly is ready to go. We just need to drop it in and fill it up with some fluid. It's also necessary to install the vent on the axle tube. |
 UPR's urethane-equipped control...  UPR's urethane-equipped control arms bolt right in-no messing with pinion angles or anything of the sort. For that, you'll want to use UPR's adjustable arms. |  UPR sent us a set of its Max-Cross...  UPR sent us a set of its Max-Cross subframe connectors with seat support (PN 2010). The subframe connectors fit '79-'04 Mustangs, and with the amount of power our Pony is making right now, they are a must-have. They retail for $59.95. |  Now go to the dragstrip, raise...  Now go to the dragstrip, raise the rpm to approximately 6,000, and sidestep the clutch. |