Looking to start a thread that will eventually be moved over to the FAQ section by Tyler.
If you can identify what fasteners go where, and give a discription of that item, Please list it here.
Example:
MK2 muffler bearing Front 10mm course thread 10cm/ 1/4" long.
Rear 10mm course thread 15cm / 1/2" long.
10mm washer
Grade or hardness would be nice if you know it.
FYI ETKA or the online version of ETOS:
http://www.vagcat.com/ will list bolt size, pitch and thread count most of the time.

Really helps out a lot, plus, a little family-owned hardware store in town here has just about every metric nut, bolt, and fastener you could think of in stock. usually I pick out what bolts I'll need for a job before hand, so I have nice shiny replacements when I do the job.

Brendan
I'm lucky to have both a Fastenal shop and a Tacoma Screw store close by.