Are you sure that your ranger had a 2.0? The reason I ask is that the 2.0 you're talking about is an early pinto motor. It looks much like the 2.3, but if you pull the valve cover you'll see that the 2.0 has 3 cam supports while the 2.3 has 4. I know that there are a number of other differences, but I don't know what they are. Don't think that the manifolds will interchange, in fact, I'm not all that sure much will interchange between the motors, but I think that they have the same bell housing.
Edwin