Yeh I used a spare fuel pipe and screwed it on most of the way to give me something to pull on then did as above with an adjustable spanner, they came out fine and that was a 95 plate car in Scotland, land of rain and salt.
To get the correct injector nut, I sacrificed one of the several injector lines that somehow accumulated in my garage over the years. Add a cheap harbor freight slide hammer, and it works great. Nowadays, DBW invented a clever little lever-type device he lends out with his hot-swaps. Might want to ask him if he has a pic
The same thread is used at the top of your front struts... If you've ever changed them, the new ones should have come with new nuts, and if you're like many here, you still have the old ones kicking around... Just find someone to weld one of them to something that fits on your slide hammer...
I would buy the slide hammer from kerma but I am just in a bit of a pinch and need it done this weekend. I have yet to replace my struts but I phoned my local vw dealership to see if they had any bolts but they did not. I am going to try the wrench method and hopefully none of mine are seized in too much!