I've got someone to help me with doing my timing belt on my 1999 S3 (APY). He has done a few other VWs and reckon we can do it ourselves. (i've never done one but happy to tackle most things) First off which bits do i need to replace? Belt, tensioner and 1 or 2 pulleys? With the waterpump do most people replace with a metal impeller now. Where is the best place to get all of these bits and is there a good brand to get? I'll need some coolant. Have I missed anything? Any other tips for the S3 or is it fairly standard across all vags? Any 'how-to' guides kicking around? Any dvice would be greatly appreciated. Thanks, Paul.