You may want to make sure your crank is drilled in the rear deep enough for the imput shaft of the trans. If it is a cast crank I doubt it is going to work with a 4 speed.
I just did a bunch of reading. If I get the Dakota pilot bushing do I still need to cut the input shaft the 1/2-3/4 inch or does the new pilot bushing solve the problem of cutting the input shaft?