check the disc size, ford did mix and match their mondeo brakes, some 2.0s had v6 brakes and vice versa. anyhow, std 2.0 have 260mm dia discs whilst v6s should have 278mm (maybe a smidge bigger but im sure thats about right) either way theyre both bigger than standard escort brakes (240mm) and should offer an improvement.

Something to note that not alot of people do. mondeos, escort turbos,cosworths etc have larger bore pistons on the calipers which when fitted to standard escorts causes longer pedal travel (I first noticed this when putting cossy brakes on a 1.1 fez, it was shocking!!!). to compensate this you will require a larger master cylinder, any mondeo one should be fine as they all run the same caliper bore.

If you want bigger brakes still, calipers from a st170 focus or mk3 mondeo with discs from st170 are good, 300mm!! (mondeo calipers are easier and cheaper to get hold of)