i tired to use a spring compressor when i installed neuspeed sports ( ~ the same drop as h&r sports) on my ex-girlfriends 2001 gsr. i got it from autozone and it was akward (sp??) for me to use so i gave up on it. i learned how to take off stock springs without a spring compressor. when i installed the neuspeed sports and tokico blues i didnt use a spring compressor either. just put my weight (about 115lbs at the time) on them and got the nut started.kommon_sense said:may depend on the spring. I've needed a compressor for both eibach pro-kits and h&r sports.