Bought for a 2002 Ford Sport Trac. It was difficult to choose between Flowmaster and Magnaflow. I chose Flowmaster because of the name and the price. I went to the Super 10 Series based on positive reviews. It wasn't too loud for a May app, as some of the feedback on the forums showed. But on the other hand, my truck has 4 catalytic converters, which softened the sound a bit. Also for Sport Trac/Ranger/Explorer owners I removed the existing extremely large muffler as well as the resonator which