Well I decided to take the plunge and try the RS*R Ti2000 springs for my 370Z! They are for the 350Z and are linear springs with a .6" drop. Not sure if it will also be a .6 drop on the 370Z but that is what I wanted, a mild drop. I did not want to go Eibach route with a .9" drop and do a progressive spring as I heard they are bouncy. I used the RS*R down springs from a 350Z on my G35C and they were awesome and gave me a 1.1" drop, but I suspect these will work fine on my car with around a .6" drop like the 350. Wish my luck!