What are these and can you buy them?
 

http://www.tsl-motorsport.co.uk/news...8/188thumb.jpg

are these avilable to buy, the side fin bits?

Yep loads of threads on them, do a search.

STi aero corner splitters.
They come colour coded for your car from any dealer, about £120 for the pair.

Got mine from Japan as they don't have them in red in the UK anymore:rolleyes:

MOD: Install STi Splitters on an 04 WRX - ScoobyMods

Mods

Once they are fitted you can put on the front STi V-Lip as well;)

thanks.. once you know the keyword to search on 'splitters' it makes things easier!!!! ;-)