I have a stock 350z... and i have 2 mufflers just sitting in the house. Now i know i should research and all but i just want to stick these in ASAP and i cant patiently sit down and research about this. can someone please tell me what part or parts i need to install these 2 mufflers WITHOUT cutting/welding, because my car is a very very long lease... and i want to put everything back like stock when i take it back to the dealer. Please help me out on this one. Thanks in advance.