vampirebret

The strangest thing happened today while working and finishing the job at hand. I bought some stock coil/springs that came from a 99 civic si for my 98 civic lx. So I took the one that was originally on my car, they were heated and lowered, and replaced it with the new used ones that I bought. The person I bought it from also told me which ones were for the fronts and which ones were for the backs. After putting in the coil/springs for all four struts, the front seem fine but the back was very odd. The back seem to have been raised about 8-10 inches or so...and these were only stock rims. Since the backs were raised that high, the front was now very low and my rims were right on the fenders. What happened? What did I do wrong?