Go with the resognated version. I have MSDS headers, Catless Y pipe & 2.5 Magnoflo Trubendz without the resognaters. It is too loud. When you are at cruising speeds it sounds really good but when you jump on it, unfortunetly it has a little buzz to it

It pulls really well but unfortunetly I don't think it is worth the noise hassle. I will probably change it when I put a turbo on the car so it doesn't sound too obnoxious.