I don't remember if it is the automatic or the manual transmission flex disks that can be put in wrong. One or the other of them has a German phrase that tells which way it goes in. It's been too long for me to remember.

It seems like it says "Diese Siet ......" This means "This Side...." As I recall the rest of the German indicates to the rear. Look for German words on the disk and then go to Babblefish.com and translate those words German to English.

It's been a long time since I did one but I can't remember the exhaust system being in the way. Collapsing the driveshaft will make it easier if you don't decide to pull the driveshaft all the way down. If you do pull it down, it can come apart easily. There are some knots that mark the pieces, but it's safest to spray some paint on it as soon as you get it in the air, so the paint has some time to dry before you get to that point.

If you take the driveshaft out, take advantage of the opportunity to check the u-joint for "notches." If you feel sort of a notch instead of smooth rotation as you rotate each axis of the u-joint, you will likely have a vibration. If there is a "notch" put a washer on one side of the right side of the carrier bearing mount between the mount and the body, then put the bolt through. This will move the carrier bearing ever so slightly from its original location which will allow the u-joint to rotate outside the area of the worn notch. This will often eliminate that vibration. If there is no "notch" worn into the u-joint, don't put in the washer.