hi guys i have some questions plz help me what is inlet and outlet? what is inlet and outlet diameter? one more question guys i want to change the sound of my car but i dont want to change the complete exhaust system so i searchd alot and found skunk2 universal muffler and it says they have like 2.5" and 3 " diameter inlet...i have mb4 2000 v reg u guys think any of those can fit into mine? one more question last one in the picture it doesnt show like its got any backbox so does it mean that its gonna be fix directly into exhaust pipe after removing the stock backbox? or its just a muffler i can put onto my stock silencer poping out of the rear bumper sorry for the bad english if i made any mistake bt i really need help abt this or any otherway u think i can change the sound of my car? thnx oh and i just topped 110 mph this morning on m62 hehe feeling proud of my car