I have been looking everywhere, but I cannot seem to find a definitive answer. I have a 1995 Honda civic cx hatch, and I am looking for stiffer coil springs that offer the same stock ride height. I have wheels that are probably too big for the car and they rub when I go over bumps at speed. I don't think I can drop the car at all because the wheels are close to the fenders. I have rolled the rear fenders enough so that they don't rub, but stiffer springs all round the car is a better idea than just the fronts. Thanks for the help!!

 

You can use springs from a heavier car, for instance an ITR. But it's not the right way to go about things. Just get properly-sized wheels.

 

If you get stiffer springs, you will probably want shocks that are capable of controlling the stiffer springs.
Also, what about stiffer "lowering springs" plus spacers?

 

As already stated, the correct fix is correctly sized wheels / tires (and odds are you can correctly run oversized wheels with correctly sized tires), but if you just want to screw with the spring rates as a quick hack fix, the cheapest and easiest solution is spring rubbers.