just spoke to koni and they said they use a rear sunny or 120y shock and put some sort of spacer in and then machine the top where it bolts in depending on what tops u are useing. i think if u are using standard 120y ones they don't need to. 320 each tho plus 40 each for the spacers and another 50 each to modify the tops if needed. 900 for shocks is a bit rediculious i recon. is it a very hard process to shorten the strut???? that seems cheaper. so as u shorten the strut u lower the car aswell i guess. i would like to keep the 120y struts as i want to do the s13 brake conversion and keep the wheels i have and not mess around with offset. is it worth the trouble. how do the struts u have now handle. i want a fairly stiff ride.