Thanks Savage, that's helpful. I'll be getting a hand from my mechanic, rather than diving completely on my own, but the more I can do, the better. He's also more familiar with VW's than Japanese imports, but he will probably be experienced with it anyway.
Were you not concerned with the make and model/part number of the actual coilpacks that you got from MB Developments then? You just went with them? From your post it sounds like newage separate coil packs are all much of a muchness and I don't need to worry too much about specifics?
Sorry for all of the questions and being a total noob, I appreciate all of your input so much! I've got the rust and discs to sort out at the moment anyway, so it'll be a while before I go for the pack, so I've time to keep reading up about it and finding the right ones. Thanks again.