Are you sure? Their site only mentions K03 and doesn't mention anything about compatability with any K04 model (inc Pirelli / ED30 in the MKV pages, or audi S3 etc).
Also, did you select the ceramic coating option to prevent rust? Or are you planning to paint the exhaust yourself? Or just not bother?
Edit: Whilst 42DD's site doesn't mention anything about K04 model compatibility, I've found documentation which states that the K03 and K04 turbo flange are the same. However, I'd still be concerned about fitment to the R as it has a drive staff in that area that the GTI's don't. Did they confirm that it will fit on the Audi S3 and Golf R (since as stated, their site makes no mention).
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