Dont go through all the crap of fitting new springs,
Find an industrial spring manufactuer and see if they can reset your springs, I have just had mine done here in Adelaide for $280 and it looks so sweet and Ive kept my original XR springs and original tolerances, just 12 mm lower all round.
These guys can lower a car to what ever height you want, and then if your not happy can readjust them.
I will post a piccie when I get the chance.
2005 Rapid BF GT-P
Interstate Member - FPV&XR Car Club SA