Have you tried a local muffler shop? A lot of times you can get custom piping put in for way cheaper than buying a pre-fabricated piece. I only paid $300 for my local shop to install custom from the header back. He installed a Magnaflow muffler, resonator and tip as well, but it is a little loud and I might be going back for a different one. (no cat, it's federally emissions exempt at 25 years)