Originally Posted by rej487
Do all the bushing come with the sets such as Bilstein shocks/struts and h&r coils or is that seperate?
You mean the plastic and rubber parts? No, you have to buy them seperately, but a lot of people just reuse the old parts unless they really damaged. Keep that in mind when you read the following:
For the springs, you need upper and lower spring pads. For the shocks and struts, you need shaft protection tubes and compression absorbers, unless you're getting Bilstein HD's or Sport's; those come with a flexible protective boot preinstalled. You might also need new upper strut bearings, and unfortunately it's hard to tell if you will unless the struts are off the car. And the rear shock mounts (RSM's) should be replaced- that goes without saying. Lastly, you'll want to replace all the nuts you remove, since they're designed for one time use. If you do reuse them, make sure you use threadlocker. The only thing that comes with new shocks and struts is the top shaft nut. As far as the rest of the hardware (washers, spacers, etc.), you can reuse the old ones.
With regard to the car stuttering, a few things to check: as Warnox said, check the ICV. Also check for vacuum leaks, and possibly a fuel pressure regulator going bad.