wolfrace w10 wheels

Hi I've got some wolfrace w10 18" wheels for sale due to me just buying some sportline alloys! They could do with 2 tyres if memory serves me right! They are good condition but will have the odd mark here and there! I'm looking for £450 I will attach a picture of what they look like!

I've just bought some wolfrace w10 alloys is it possible to change the centre caps to vw ones? If so what size would i need