What are the benefits? Does it lower the G coupe any? How is the ride? Is it much rougher? Anything else that changes? I would like to lower my car just a bit and not have to spend much $$$. Any input would be appreciated.

 

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Try using the search function. Use the terms "350z" and "suspension". There are a ginormous amount of threads with this same topic asking the same questions. You'll find plenty of good info. Since it looks like you have an '04 Coupe, yes, you will benefit from the more agressively valved 350Z shocks. Yes, it will lower then coupe about 1/2". The ride may be a little rougher if you drive on rough roads but nothing the average person would complain about.

 

The 350z springs will lower the car more. I have a set of tein s techs for sale for the 350z. PM me if your interested