Hello Juse,
When I got those springs tested, (The standard ones) they gave me a scrap peice of paper which I soon lost, ever since that day it has been a pain, as the correct figures would of been useful to otheres like your self and also my good Jeza. The figures that Jeza said are what I remember, and also I remember that the first few inches where very soft, they where divided into thirds the measurements that is.
Most good race prep shops should have a spring measuring tool, so maybe a short trip to them and some mecanich currency (BEER!) can go a long way I find.
As for the springs I used they are
http://www.kingsprings.com/ King springs (Pro sport) part number KST-200, they are motorsport withed (65mm) and are single progressif. 200lbs.
The springs used on a Honda Civic are a smalll coil maybe even smaller that 65mm, but as for the lbs rating who knows only a trip to the race shop may tell you the actal lbs rating (don't forget that older springs will be a lot softer than out of the box springs)
hope this helps ????