don't you have a mk3? either measure them or break out the 13mm and swap them over? mk3's never had aero wipers anyway so i'd assume they'd be aftermarket or a later models wipers fitted to a mk3.
yes i have a mk3 but my mk2 is in the garage atm wich is sbout 40 miles away. You can buy a retro fit mk4 upgrade kit or something from vw ... well thats what i have on the mk3

Think he chopped in his MK3 for a MK2 and an Alfa 156 1.8 2.0 Twin Spark 
would rather that then ur 1.6 bud

mk3 ones wont fit, ive tried it before
ah ok thanks mate. normal crappy wipers it is then