The recommended towing capacity for a Dodge Dakota is around 5000 pounds. The recommended towing capacity of Dodge Dakota RT of only 2000 pounds because the RT has lowered springs and different shocks then the standard Dakotas.
Yes. A 3.9 v6 engine from a 1995 Dodge Dakota will fit into a 2000 Dodge Dakota with a 3.9 v6 engine. You will have to swap the intake and exhaust manifolds along with all sensors and fuel rail though.
The Dakota 4.7 take ATF +4 fluid, not Dexron or Mercon. The capacity for a 45RFE transmission is 14 quarts after a complete drain. Otherwise, it is 10 quarts for a complete drain, or 4 quarts for a filter replacement.