I'm looking to replace my Corsa sport with a Magnaflow xl 13741 which is their 30" round muffler. The Corsa is getting a little loud for my taste and I'm getting an annoying buzzing noise from the muffler at around 2000 rpm. The truck came with this system so Corsa won't replace it under warranty and I have no intention of paying $250+ for a replacement. I also plan on installing some longtubes pretty soon and think the Corsa will be way too loud with them on. I've searched for a sound clips but most of what I find is the smaller magnaflows. Thanks in advance.