I was wanting to scrap my round style muffler for a oval magnaflow street series muffler for a more low profile look. Anyways I've got a full cat, so I was just going to weld the new muffler were I would be cutting the old one off. Anyone have any experience with these street series mufflers? Or any advice on a good twin loop? I can snatch one for $90 shipped, thanks for the help!