Parting out my G37, here's some stuff that'll fit a 370z.
Local sale only for now Located in Queens, NY
-Tanabe Sustec Pro Coilovers
$550 local/$600 shipped
Great set of coilovers. Great ride quality which is all I cared about for my daily driver. The height adjustment is awesome, you can slam it or keep it nice and high. They're great handling coilovers as well. Approx 10,000 miles on them. A bit dirty from NY roads and such. I have the adjustment wrenches even though they're not pictured.