[Alaskan SS]

Over the last 4-6 weeks, I was finally ready to start modding. I ordered a Kooks cat-back from Jason at Phastek. It showed up on 15 April. Install went pretty good. I am having a vibration or rattling issue when taking off. It's mainly at low RPMs in first and second gear. I think it's the right rear pipe (the one between the X-Pipe section and the muffler section). There's no clearance between it and the rear differential. There's at least an inch and a half on the left side. I asked Jason about it. He's looking into it for me. But any ideas are welcome. I'm wondering if I installed the X-Pipe upside down, but I'm not sure if it matters. Maybe I just need to tweak it a bit more. I'll post pics at a later date.