Before you spend money on parts, consider another (much newer and low mileage) engine. With what I see in that picture, there is also bore damage, and head damage. By the time you pay for ALL of the parts and machine work you can almost always buy a good used late model engine. The 4.0 never changed anything critical during its run. Some external stuff changed, keep all your old wiring and sensors. But the long block itself will interchange between all years.