I went with the Mufflex system so I could go back to stock later if needed as it's sold as a bolt on system. The fit was horrible, the inlet pipe is a lot bigger than 3 in. and the rear hanger tilts it at angle, making it worse. Used a lot of High Temp RTV to ensure no leakage. So far so good. I will install a Maggie Y pipe in a couple weeks and might have shop weld up everything. I know, Lesson learned. That said, I do love the sound and performance, exactly what I was looking for, so the Hemi could sound like its suppose to. Sorry if there is some background noise but you'll get a good idea of what it sounds like and let me know what you think.