DeathByBass,
Your coilover is nice and I never saw it before. What brand is it and how much does it cost?
I'm using the Tein and I didn't like to compress the springs when the car is off the ground. I only set the springs to touch enough the bottom spring seats and the top mount without them falling out. The SC300/400 doesn't have the equal height for front & rear, even the left and right aren't even. This happens to many SCs and no one seems to give the correct answer. Someones said it's the end links but that's not right, because both sides are installed the same way.
So in order for all corners to be even, each coilover will have different heights. The reason I didn't compress the springs is as above. The higher coilover will be stiffer than the lower one. My trick to raise the higher coilover is to install the extra nut (I think it's 17mm) and the flat washer on top of the bump washer that's located on shock rod, where it's wider and under the top mount. On top of the top mount will be the last nut. You can have up to extra 2 nuts just fine. The whole coilover will be as rigid as without it. If the height isn't enough, you can still compress the springs a little.