Bud, I’d say you could use a little more experience all around before becoming a junior trucker if you’re asking a question like this.
First, it took 30 seconds to google the chart for your truck and it’s rated to tow 12.6k.
But more importantly, you have not said where/what type of towing you’ll be doing. That matters. It’s a completely different ballgame if you’re towing it to the lake in Iowa….from Iowa vs loading up on the east coast and pulling thru the hills back east and the Rockies out west. Chassis is stout enough for either or both. The drivetrain is lacking for more than the hypothetical flatland short distance occasional trips.
The engine will handle it, barely, in “Iowa”. In Colorado, you’ll want to turn around by a he time you get to Floyd Hill and trade it in on a diesel.
But the real turd in the punch bowl or weak link is the crappy 66rfe trans. You got the last year of the HD gasser with a sub par transmission on all accounts.
I have a 2016 diesel with the 68rfe that I kinda fell into, would never have bought one otherwise or for full price. 14k would make me cringe and I’d baby it up every grade and it’s rated higher than the 66.
In this case ignorance isn’t bliss. You just don’t have the right drivetrain to tow that big and heavy
Some will tell you the 2500 is overloaded. It isn’t. But the drivetrain is under powered and undersized for the job. Considerably.
This coming from a Ram/Dodge/Mopar guy.