Has anybody seen a chip programmer for the 2004 Hemi Durango?

I use my Durango as a Tow Vehicle for a 4800lb Hybrid camper with a GVWR of 7000lbs.

I would like to reprogram the shift points and the power band for towing and reprogram it back to default for standard around town driving.

I can find one for my 2003 Ram 1500 with the 4.7, but not for the '04 Hemi Durango.

Thanks