hummmmmmmmmmmmmmmmmmmmmmmmmmm... dont know the answer to that. most decent springs start from about 150, so im sure the one you got is good. it really doesn't matter what brand it is, as long as the spring is decent (like perhaps it was oem'ed by H&R).
also, its just a piece of wound steel....how much more do you wanna pay for just that?
you'll probably wanna upgrade to coilovers with shocks in the future anyway, i think you made the right choice to start things off to see if you like lowering your car or not. if you dont like it, just put back the factory springs. easy does it.
