mk4 Golf GTi hubs on a 9n

[jmv]

Hi all,
I am new on here (only having my polo a week) and would like to know;

Will the hubs on a golf gti mk4 fit onto a 1.4 tdi? the reason for the question is i hope to upgrade the brakes on my car to these

http://awesome-gti.co.uk/images/porschebrakekit.jpg

It uses porsche boxster calipers (with adapters) and audi tt discs (presumably same as gti).

thanks

joe