"Duratec is a brand name of the Ford Motor Company used for its gasoline-powered four-cylinder, five-cylinder and six-cylinder passenger car engines"
Duratec 2.3l is a variant of the 2.3l Mazda L 23EW engine
Rangers got the Mazda L 23NS, Ford cars got the 23EW
NS = North-South
EW = East-West
NS orientation is for Rear Wheel Drive, engine mounted front to back
EW for Front Wheel Drive, engine mounted sideways
2.3l Mazda L was designed as 23EW, so when mounted in the Ranger NS there is a cooling system connection at the rear of the head/block which can only be accessed with transmission removed.
If transmission is ever removed it is a good idea to service this connection and hose.