I will have a different reply than most here! Your ultra light will have a gross weight of around +/- 8800 lbs. That's the total weight empty trailer plus all the cargo, supplies, water etc. Now I believe the Ram Hemi will have enough power to tow that unit. The more important question at least here in North America is the load carrying capacity, the ultralite will have a pin weight (the weight of the trailer that sits on the back of the truck) of +/- 1300 lbs. Does the Ram have the ability to carry that and possibly more?? Air bags will help however they do not increase the weight carrying capability legally, at least not here. Hope it all works out for you!