Thought I'de post my experience so far. I've been driving a s3 with a 200di for about 4 years. I must say although it appears to fit and drive perfectly, it's crap! Too much low end power means it's bunny hopping 1st to 3rd. I've been through 2 gearboxes and 3 halfshafts. Using it everyday has rendered me half deaf. Now yesterday a hole appeared in my downpipe and because it's such a tight fit I can't get in there to patch it or remove it so it's even louder and absolutley gassing the cab! Using this engine does in theory have it's advantages but practically it doesn't work long term and is a pain to live with. I would keep the v8!