Some of the bolt-on applications should be the same. The Escape either has a Zetec 2.0L, or a Duratec 20. I'm going to assume it's a Zetec (just won't have the name on the valve cover the same as the Foci's). If your engine is a Zetec, you should be able to use parts like sparkplug wires (9mm FRPP ones), 5w20 Synthetic oil, AEM or Injen intakes, and Focus-Central camgears, underdrive pulleys, and throttle bodies.
Get some pictures of your engine bay and that will help identify what engine you have...(I had a modified ZX3, and will know what the engine will look like if it is the same).
L8tz