Got stuck into this yesterday
crack your axle nuts with the appropriate breaker bar and 30mm socket
http://www.vwwatercooled.com.au/foru...IMG_3516-1.jpg
new and old cv's side by side. may aswell replace outer boots while they're off
http://www.vwwatercooled.com.au/foru...IMG_3521-1.jpg
the difference between 90mm and 100mm bearing hubs
http://www.vwwatercooled.com.au/foru...IMG_3526-1.jpg
In this case my neighbour took the difference off in his lathe in exchange for a beer or two
http://www.vwwatercooled.com.au/foru...IMG_3527-1.jpg
new cv hubs sitting snugly on the shaft
http://www.vwwatercooled.com.au/foru...IMG_3528-1.jpg
clean and repack outers and refit the shafts to the car and they bolt up perfectly!