Originally Posted by white_n_slow
well, odds are they're the "standard" GC spring rate for civics, which is somewhere in the 375f/250r area. As long as its in that ballpark, they should be fine. If he got custom rates, the rears will probably be stiffer, which is no biggie. As long as they're under 450 or so (f&r), you should be ok.
I heard that there were 3 different kits that go with different shocks. Would I be able to find out which kit it is by the model number on the springs? I want to make sure I purchase the right shocks.