This was a suggestion from MattyboyC, and a good idea I think, so I thought I'd start a thread to collect some thoughts first.
The idea is to collect the common (and less common?) part numbers and put them together in one place, things like S-Line valances, Aero wipers, CTS's etc etc. There are two way's we can do it:
1). People can PM me when they buy stuff and are 100% sure (!) they have the correct part number for the item. This will keep the thread to a single post with all the numbers in, as will stop it becoming too unweildly like the ebay thread with chat etc. However I know it's a bit more work to send a PM than post in the thread, but hopefully people will spare the time to add to a resource that they can benefit from.
2). I can leave the the thread open and people can add part numbers, my concerns here are that the part numbers will be 'unregulated' and that the thread will become so long and disordered that you'd never be able to find anything!
I welcome your thoughts....