2006 Jeep Grand Cherokee SRT-8

This vehicle is alarmingly quiet at idle, then ramps up to any level of banshee scream you can imagine from the big brother to the 5.7-liter Hemi. Goodyear Eagle 255/45ZR20 high-speed run flat tires are sucked onto 20-inch tall aluminum wheels ten inches wide for needed traction. When you drive this rocket, you’ll immediately appreciate how well this suspension is thought out and tuned with regards to keeping the vehicle planted on the asphalt.

Bilstein mono-tube shocks and suspension tuning from Mercedes Benz German engineers work with Quadra-Trac Active On-Demand 4WD system. Brembo big-rotor disc brakes with enormous calipers and Anti-lock technology are definitely items you don’t have to upgrade. A Dana 44 rear differential with beefed up ring and pinion gears and a new axle housing are sufficient for a starting point. But the actual baseline horsepower and torque available with this particular HEMI can put some strain on any Dana 44. If a Dana 60 were shoehorned under that rear Grand Cherokee deck, it would make more sense. A bomb-proof Ford 9-inch would work, but that would be bloody treason.

[Source: TruckWorld]