Megan Racing Springs (rates?)

I have been searching forever it seems like to find out the spring rates for the Megan Racing springs for the RX-8. Does anybody know what they are. I haven't been able to find a thread on this site or a website that lists it. Im trying to pic between the Tein S Techs or the Megans. I want a good drop, but I don't want soft springs either. Thanks-