1987 Dodge Dakota 5.9 swap with a NV3500
below are some pictures of the clearance needed to fit a v-8 in the engine bay of a early (87-90) dakota.
Hopefully it makes sense. If not, ask me what you want to explain or post additional pictures of.
3.9 head
5.9 head
3.9 clearance to radiator
Overall picture of 3.9 to radiator