I know springs rates and height is very different between the G s/h tech vs Z s/h tech, but
how do i tell if my S tech are the "350z" version or "g35" version? same question for H techs

it's off the car so is there a way that i can see which version it is by just looking at them? or using the white lettering print on them?

this is what i have:

Stech:
front is: F-P1P30-OUO GDC
rear is: R-P1P31-OUO GDC