Adding Nismo to a Sport Model?

Pro4Jackster

I am meeting with my Nissan guy next week to work a deal on a 2012 Sport. We have already agreed on a good number for my Trade-in, so I just have to pick out my Z. I am still 50/50 on 7AT or 6MT, but driving an AT should help me make up my mind. My questions are:

1) How is the quality of the Nismo strut/spring/sway bar combo + 20mm spacers? This car will be a second vehicle driven on the street only, but I like the slightly lowered stance. Adding these upgrades at delivery will keep the wife from asking too many questions. Ha ha.

2) How is the quality of the Nismo Catback? I plan to add Motordyne Test Pipes, Stillen Intakes, and Uprev. I know it has a high price tag, but does it perform/sound similar to other Aftermarket catbacks?

If no one sees any problems with this plan, I'll be rolling off the lot with a Base Sport with: Katzkin leather, Nismo Exhaust, and Nismo struts/springs/sways...Probably gonna be a 7AT.

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Jtranbuilt '08 Z [Jtran PT7075 Single - Fujitsubo - Transgo - Wilwood - TE37SL - BC Racing]