I have a Grip but not the Nismo. I had no install or fitment issues, just take your time and make sure you jack up the x-pipe before tightening it down to the cats. Otherwise it can cause a rattle. Aligning the tips was a little difficult to do by myself, just be patient.
I love the sound of this exhaust, especially when you get on it. I wish the tips were more attractive like the FI, but it still looks great. I love the 'ARK' stamped on the cans. Make sure you take the time to align the cans otherwise the wording draws attention to the crookedness.
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