there is a website you can use. You do have to do a bit of searching through it. Here it is:
http://www.oemepc.com/
Good for seeing systems and part numbers.
ive just recently put a Whiteline Rear ARB on mine and I have no issues with it rubbing on the fuel tank. might seem a stupid question but is it on the rear beam right?
That Sounds like an absolute lovely person. @CLAYTONJONES If you need to borrow a fully working light for a day give me a shout or you also have dan harrow near you aswell with a GTI.