I am planning on replacing the mufflers but I need some help. I need to know what size is the inlet/outlet. I also need to know how it is oriented, if you are looking down on the top of the muffler is the inlet on the left, center, or right? And the same for the outlet, left, center, or right? Last but not least what diameter tips look good, and do resonated tips make a difference? (Exhaust Tip recommendations welcome). Thanks for your help you guys are the best.