ok so just to be clear on parts hear...
With st170 brake conversion (done to a 1.8 focus, rear drums),
REAR: Calipers, discs, hub, new/decent 2nd hand hoses.
FRONT: Calipers, discs, ST170 hub.

this setup will deffo fit all 17" alloys yes? just bought some new dezent motions (pics to follow when the council stop gritting the fooking roads) n would be devastated to find they don't fit.