Im looking to convert the rear brakes on my 1.6 Zetec Focus 2002 from hubs to discs. Next year I want to engine swop for a st170 but want to make sure everything is ready for the convertion first. What do I need for the rear brake convertion. And before anyone says why dont I just buy a ST170, I cant afford the insurance, depsite having a clean licence for the last four years! My 1.6 insurance is high enough.