I am about to purchase a flowmaster super 44 mufller for my 3.5L charger. I already blastin bobs exhaust kit with the y pipe so i dont need dual outlet on the muffler. I was wondering what inlet and outlet pipe size i should get if i want to CLAMP it on, not weld it. I have heard it was 2.5 in but i did not know if that was for welding it on. Thanks for the help!