they only make one TEIN spring for the 370. the S-tech spring.
they also claim .75 drop in the back and .87 up front. i got more like an inch front and back.
NISSAN 370Z
heres my car on the left with a members car on the right. (thx Jenny!) she is no drop no spacer, im tein springs and 15mm spacers.
dont know about yall but i think the tein drop is spot on!
p.s. i think i might go with 20mm spacers up front later on when i change out my front rotors.