I replaced the rears on mine with Koni FSDs. Can't really report on the ride as my fronts are still blown... those will be done on Friday weather permitting.
Anyhow -
one important piece of information that I didn't see covered here - the bottom bushing on the rear strut needs to be tightened when the rear wheel is at it's normal ride height position. That means don't tighten it when the car is up on stands. These type of bushings need to be tightened when in their normal position. The rubber will bend and flex as needed when the suspension moves, but if you tighten them when it is fully extended they will be twisted too far when you go over bumps possibly causing the bushing to wear prematurely. Indeed the Koni instructions tell you to tighten the bottom bolt when car is resting on all 4 wheels.
What I did was to measure the space between the fender lip and the top of the rim. Then before fully tightening the bolt I use a jack to lift the wheel into position by measuring, and then tightening it the last bit.
I am probably not describing it very well so I found some online links that do a better job.
"To answer your specific question; Yes, to properly install and tighten mounting fasteners for suspension bushings, the suspension must be in its regular ride height position prior to the final application of torque to any bushing hinge point. If the vehicle is on a hoist, the suspension will be in its full rebound, or downward, position. Once the car is on the ground, the bushings will be forced into a twisted position as the weight of the car bears down on the bushings. This will increase the ride height and not allow the bushings to flex into their normal jounce (upward motion) position when the suspension needs to absorb a bump. This puts added stress on the bushings and adversely affects the alignment of the front suspension, which will create steering and control problems. "
from
http://m.theglobeandmail.com/globe-drive/car-tips/maintenance-and-repairs/why-the-days-of-diy-car-repairs-are-over/article2106775/?service=mobile
and
"When the components are tightened against their "natural" position of a loaded suspension, and then forced into the loaded suspension, the rubber must stretch into this new position. Therefore, the rubber is essentially ALWAYS under stress and wears out prematurely. My theory is that the rubber is not stretching ALL the way and my ride is higher than it should be. I'm hoping to find out that YES, this is what's going on, before I spend money on an alignment after doing what joe p suggests. Furthermore, if the rubber has been stretched for 60Kmi then maybe I should just pony up the money for new links in rear , yuk yuk and then get an alignment..."
from
http://www.peachparts.com/shopforum/tech-help/48898-when-bushings-tightened-off-ground.html
Very important to do this. If you have already tightened, you can just lift up on ramps and loosen the bolts a bit and re-tighten. I am not a mechanic professionally so perform at your own risk.
Jason