Well... I have a problem... I have the Koni yellows installed the car for a while now along with sprint lowering springs, if i rememember right 2" all the way around. Its been almost a yr or so since ive had them installed so i lost the actual specs of the springs. After having them settle after a week or so, i had an alignment done on the car, the front was maxxed out and still about 1 degree off from what the alignment spec sheet said. and the back... well the back sat lower and would rub on the fender if i tried getting it where it needed to be. I thought of getting spacers made, but wasnt very sure on how to measure, and if i got the measurements off, the car may sit a bit kiddy whompus... then i saw another member had installed Koni threaded spring perches to adjust the ride height. But he hasnt been on for a loooooong time. So i was wondering if anyone else has installed these. Im still waiting word from Koni about them. But has anyone else installed these, and if so, which ones did you get, and how much was it, i didnt want to go to coil overs because i just dont get the car to the track enough to spend that kind of money on them, plus i already spent a good amount of money on the shocks and springs. Any help is helpful.