s3 spoiler on a3

[JCC1981]

this has probably been posted many times before, but i was just wondering how much would it cost to get the s3 shaped back spoiler for a a3? and is it easy to fit?

 

[Markb]

Found using the search function:

Clicky

 

[JCC1981]

cool cheers, tried searchin earlier didn't seem to find much.