I was wondering if the 04-05 sti springs will fit onto an 06 wrx? and how much will it lower the front/back any improvements also?
I don't know the exact numbers, but the STi's spring rates are greater than your softer RS springs. This prevents squatting of the rear when you launch the car. I think that's the only difference besides the fact that it'll lower your ride height by a little. Your car is lighter than an STi, so there'll be less weight from your car to compress the springs. Sorry, I'm not experienced enough to know this stuff for the new generation Imprezas.
