Thanks to BeachyBoy014 for his input.
Thought I would share a couple of sites I have found over time to look up the VW Part No and position of fitment.
First is a parts Base for VAG and others with exploded views of different areas :- http://www.oemepc.com/
Found it very helpful to track down a part and its fitment !
This one compares different manufactureres part No's for the same part and specs :- http://www.vehiclepartsdatabase.com/vehicles
Recently came across this site looking for info on vavle guides, gives detailed info on each manufactorers of the same part to compare specs, you can put in the part No you have and it will cross refference it with other makes, or just look up the part you need !
Hope this is in the correct section !