Just found this web site while crusing round the net:

http://www.pro-motor.be/

Specifically for MK1 Golf's with lots of useful info, if you don't speak french you can use Altavista Babel Fish to translate the pages - link here:

http://uk.babelfish.yahoo.com/

Just copy and past the web address in to the "Translate a web page" field and choose French to English and hit the tranlate button.

Chris