Again, the sport shocks are simply shorter to work with the shorter springs of the sport suspension. What you do NOT want is a mix of sport shocks with standard springs or sport springs with standard shocks.

If you are going to change to the sportline springs, you need to also change the sway bars. You are opening up a pandora's box.

I went through several iterations of spring/shock/swaybar combinations and I finally ended up with what I consider the optimum. Very few people will agree with me and that's fine. Everyone is free to set up their car as they like.

I FINALLY went to stock springs, Bilstein Heavy Duty at both ends, stock front sway bar and 500E rear sway bar. With the extra heavy rear sway bar, a good bit of the understeer is taken out. The car goes where I steer it.

REGARDLESS of shock/spring/swaybar choices, all suspension members and mounts must be in good shape. You can inspect the dogbones in the rear suspension visually. If any joints have rubber sticking out replace it. Grab the differential at the u-joint and shake it up and down to check the differential mounts. If they are loose replace them. Check ALL ball joints,and steering joints for tightness.

With everything in good shape, stock springs and fresh Bilsteins, you will have a great driving car. Go one step further with a 500E rear bar, and you will have a greater driving car.

My $0.02,
Larry