Keep us informed as to how the Flowmaster works out for you. I'm still on the OEM system (except for the `Nissan flange' leak that I had piped), and have been thinking about the Flowmaster, available from a local custom exhaust shop when I need it. A lot of original, 1st gen Mo owners (like me) must be in a similar situation, now that our OEM systems are going on 7,8 or even 9 years old. Noise - specifically the drone most street performance systems (like the GReddy SP2 I had on my Maxima) produce - is a concern for me since the Mo is my wiife's DD.
(And - oh yeah, halikini - I was amazed to hear that in 2012 anyone could live someplace anywhere NEAR 100 miles from a Nissan dealer. Especially in a relatively civilized place like NE.)