I have the same callipers for my Mk4 fiesta. I fitted the braided brake hoses to the original callipers and now the Mondeo ones and they are exactly the same fittings. Hoses for the Mondeo will probably fit to the Fiesta brakeline-flexihose junction but will be longer and may foul the wheel or brakes. The fiesta ones are the ones to go for. I'm pretty sure the Mk4 and Mk3 flexi-hose fittings and lengths are the same.

hope that helps

Alan