Four Escorts mate, I have the Mk2 as well... oops!
The side stripes are possibly longer but come cut anyway, so you get a few extra inches to play about with atthe door cuts. You also need to cut a small piece to go over the filler neck hole, estaes dont have it in the same place. The only bit you need to specify longer are the roof stripes, you need 7 foot in total, so much longer than standard ones. If you mention it to the grahics people they can cut them longer for you, one end is straight and square cut at the glass anyway so dead easy.
Cheers to monkey by the way!