Once you get the manifold flaps unstuck, if you only need the little plastic arms, don't bother paying Audi for the extremely expensive bellow+arm set if your bellow is fine.
Just get 8mm ball tie rod/track rod ends from ebay, they should work just fine.
I got mine from RS components stainless steel, but its overkill. And even that was only £10.
http://www.ebay.co.uk/itm/GO-KART-KA...8hDkLCem_XD0Qw
Just make sure its a 8mm ball so it will fit the ball on the bellows, its not clear from the ebay description. They should have 8mm ones its a very common size.
The only fabrication you might need to do is to cut or file down the male rod end's thread down to size if its too long. Compare to one original plastic link to make sure length is the same.