Jeep JK Supercharger for your 2007-2001 Wrangler JK 3.8 Auto and 6 speed. The ground breaking, bar setting hands down number one kit on the market for the 07-11 Jeep JK period! No other brand matches RIPP in customer satisfaction, power and reliability. Please Allow One Week for assembly of your purchase. A CARB LEGAL KIT.YES RIPP Superchargers FIT Right Hand Drive Jeep Jk's. Initial testing has found that in stock form the 3.8l only produces 133 Wheel Horse Power (WHP) on stock tires and gears. Most of RIPP Superchargers's clients have 35-37 Inch tires installed, WHP then drops to 108-123whp. With the addition of a RIPP Supercharger and running through stock exhaust manifolds, cats and exhaust, the 3.8l produces 240-/+ Rear Wheel HP (WHP) on stock wheels/tires and gears at 8psi. More over an impressive 230+whp and 260+lb/ft of torque on commonly used 35 Inch wheels and tires.