I don't think there are any available. Sag2 has posted his results of towing a small camper with his.
https://www.turbodieselregister.com...ord-F150-EcoBoost-to-pull-a-7600-lb-Airstream
Read Sag2's post about pulling with an Ecodiesel.
It does down shift more than a truck with an EB but it does a pretty nice job of retarding.
Hopefully GDE made it smart enough to kick this out in case the ABS senses Wheel slip. Otherwise this would be dangerous as hell.