You might want to look for the Polo G40 valve cover in your neck of the woods. Its nice...looks like the Corrado G60 one only the cap isn't recessed in it and the breather is on the opposite side...i ran it on my GTD 1.6TD for quite a while and it was nice... plus... NO leaks!!!
I got my from Futrell Motorwerks in the US here for about 65.00 at the time (was a group buy i believe) but I think I've seen them on euro stores for about the same price...
I'll keep an eye out when I'm looking at project pics, etc. on those sites
Joe