Ok, last week I had the "under vehicle" fluids changed! Had the tranny flushed, and tires balanced and rotated. I put 100 miles on it, no probs, and runs great... Total miles currently 144k. The muffler noise under the passenger seat was getting louder! I need exhaust parts, the 2 pipes before the converter- Part # 17401-66011, and 17402-66061 Anybody have the "buying experience" with this??????