I've been told so many different things about fitting these.

I have got myself some 312mm brakes. With carriers the lot.

I understand I need to change my hubs?

I thought that the hubs off of a MK4 1.8 or GTi Golf would fit? Or the MK1 Octavia

This is for my Monte 1.2Tsi

Hubs from a mk2 vrs or any Fabia mk2 with 288mm front discs should do it

http://www.briskoda.net/forums/topic/188948-front-hubs-brake-conversion/