A bird decided to do it's business on my rear spoiler which has resulted in a nasty etch mark

. The good news is that it's given me an excuse to get an Evo X spoiler

. Can anybody recommend me a store in Brisbane where I can get this done (2011 Ralliart). Alternatively I could purchase one online and install it myself but I don't know of any reputable stores. Any suggestions would be great help.