Researched it first. Most are towing 6-7k lbs(a few upwards of 15k lbs) with the 6.0 just fine. Its capacity is like 10200, but I think that would be tough. It does 5k fine, tested that for a few miles before I bought it.
Honestly the TB would pull the SS, but it felt like a boat anchor back there.
Glad its an 8-lug then. I would've been pissed-lol