or walkers megaflow. It cost $107 at advance auto parts. The walker noisebreaker muffler cost about $160.
That's where I buy mine, luckily there is a distribution center on Lawrenceville, GA, so I call and just drop by and pick them up. I recently went for 5 inch top stacks to 6 inch top stacks and it made the mufflers sound a little louder with no other changes.
I'm all into focusing on m100463. After looking other threads from 2009, I feel confident buying m100463 over walker megaflow/noisebreaker.