dan,
It goes back to what I said earlier about the factory receiver being rated for 10K. Unless, Reunel had their bumper tested while bolted to a Dodge frame the rated capacity isn't 'officially' increased. I use the term officially very loosely in this case. I'm sure the Reunel bumper can handle 15K or 20K but that's when the bumper is attached to something stronger than itself. I question whether the Dodge frame can take the 15K or 20K.....
Brian