I bought my 1st z last year, I had zero vq knowledge back then and I never asked about such thing, not because I read the "rules" I just didn't need to, I mean exhaust topic is like EVERYWHERE why would I need to ask about it, you go write "350z e" down any search engine across the internet and you'll get "exhaust", it's not rocket science, a 1st grader could figure it out, just try it man, it's very exciting!