The inside of the door jam says up to 8750. It does have the tow pkg with the 3.92 gears and the 5.7L Hemi.
This is off my build sheet:
AHC Trailer Tow Group
DGQ 5-Spd Automatic 545RFE Transmission
DMHS 3.92 Rear Axle Ratio
DRBS Corporate 9.25 LD Rear Axle
EZB 5.7L V8 HEMI MDS Engine
NHBP Auxiliary Transmission Oil Cooler
NMCP Heavy Duty Engine Cooling
SHAS Front Stabilizer Bar
XFHP Class IV Receiver Hitch
XFKP 7 Pin Wiring Harness
XFUS Trailer Tow w/4-Pin Connector Wiring
It says the following but since the previous owner put a lift on it I'm not sure if this still applies:
SFBS Front Heavy Duty Shock Absorbers
SGBS Rear Heavy Duty Shock Absorbers
So, that's what my truck has, this is straight off the build sheet from Dodge, of course there's a lot more but I didn't include stuff like the seats and interior color etc.