So I've seen it discussed before with no definitive answers so I decided to be a guinea pig and try it out since I don't do things the "right" way and put parts not listed for our trucks on it. The Energy Suspension cab mount kit sold for the 96 and older Dakotas DOES fit on the '97-'03 Dakotas. At least it fit my '00 just fine.
Here are the factory mounts that came off my truck
Front
Rears
Energy Suspension ones
Front
Rear