by what ive been told, the cooler will probally fit, it doesnt fit the s3 snug i dont think anyway, few cuts on the front bumoper etc, secondly the piping is different, i think the manifold is the other way round on an s3, so youve got to bring a certain pipe around to the a3s side, i dont make much sense, look a few posts down for fmic and youll see a massive thread on it, towards the end is a bit about fitting it on a tqs, you can get one fore half the cost of forge from ah fabrications,, a memeber done it for the first time,, his fmic thread should help.