what you have to remember though is its alot more work than just fitting a k04-023 turbo and manifold, you need oil and water lines to fit. a custom downpipe so that it'll meet up with your cat back exhaust, you'll need injectors upgrading to get the most out the turbo and the s3 ones wont fit the AGU, then you'll probs need to upgrade your fuel pump to get enough fuel to the injectors, you'll also need a FMIC and poss bigger maf housing and then get it all mapped. Alot of work and money.