Has anyone had experience with Swift Springs? Seems like there's always interest in another spring source. These guys are limited in Nissan inventory so far but have been open to inquiries about products for the Z community. Guess the next step would be to show them there's a market.

http://www.swiftsprings.com/products/sport-compact/sport-springs.html

http://www.swiftsprings.com/history.html

I have Swift Springs on my 370Z and highly recommend them.  They are not a lowering spring, they are a performance spring that comes with the added feature of lowering the car and improving stance and handling. Love them!