We just purchased a 2010 Nitro 4x4 SE, 3.7L, has 3.73 rear axle. Really pulls strong. 130K on the clock and looks and drives almost like new. 20" wheels. We upgraded from our 1998 Durango 4x4. We hoping it gets decent gas mileage being a V6. Love the ride and comfortable seats. Changing the tranny oil and filter and transfer case fluid this weekend. everything else looks great. suprised how quiet it rides and no wind noise.