89 power ram 50 4x4 5.2 swap, need information.

I am wanting to swap my 2.6 to a 5.2 carb'd v8. i need to know what all is needed for this swap.
Is the transmission i currently have going to be able to hook up to a 5.2 ( 3 speed auto )

My truck is lifted 4 inches on 31's with skids and all. will it be compatable with 4x4 and how easy will this swap be?

all info is appreciated!