Will your dodge ram v8 1500 motor fit in a Dakota?

No, a Dodge Ram 1500 V8 engine will not fit in a Dakota without significant, and likely impractical, modifications. The Dakota is a significantly smaller vehicle, and the engine bay, frame, and associated components are not designed to accommodate the larger Ram 1500 V8. You'd be talking about major fabrication work, potentially including modifying the firewall, frame rails, and suspension. The cost and complexity would far outweigh any potential benefit.