do your hubs look like this??

http://shop.mondeospares.co.uk/ekmps...2005-214-p.jpg

if so, then they are standard fit on mk1 1.4, 1.6, 1.8 and 2l.

also if the discs were that badly worn they were down to the fins when were they last checked? when was the last mot? i'd be very worried about the condition the rest of the car is in.