According to Fords service CD rom the motor mount has to come as it is connected to one of the timing belt covers, as does the crank pulley because it sits over the lower timing cover. I'd personally recommend replacing all three pullies as they are all prone to seisure and you may as well do it while you have everything apart. The cam lock tool is also mentioned that it must be used as well when changing the belt, in order to hold the cams in position once the belt is removed.
