Toyota provided us with both a base-engined 4.7L (blue Sequoia) towing a 5,100-pound ski boat and a 5.7L-equipped silver unit hitched to a 6,200-pound toy. We were allowed to drive around a five-mile course and back the boats down the double-curbed launch ramp. The large rearview mirrors were better than many pickups we've towed with and the V-8 engines had little trouble yanking the boats around. The shifts of the six-speed tranny go almost undetected, but we felt the 5.7 was a bit noisy under full throttle with lots of underhood valve noise. Perhaps production units will address this.