Probably not!
Because most 1/2 tons are overloaded with anything bigger than a 5000# fiver hooked up. That's because, with a fifth wheel, they run out of Payload capacity long before they run out of Towing capacity.
(Unless you have the 8600# GVWR HD with the Max tow package, which I doubt with a 3.55 axle).
By way of explanation..........
What does your "Tire and Loading information label say on your driver's door pillar as far as "Combined weights of occupant and cargo must not exceed xxxx pounds" say?
That is your max payload rating.
What do you mean by "Total weight of 8600#" for the fiver.
Is this a dry weight, a loaded for travel weight or the GVWR?
The fiver will put 20% of its weight on the truck.
20% of the "Loaded for travel" weight is what you need.
A hitch will typically weigh 150 -200#
Add up the weight of occupants (driver, passengers, the dog etc).
Add any other "stuff" in the truck (toolbox, cooler etc).
IF (and it's a big IF) that total is less than that 'Must not exceed" number, then you are good to go and I will retract my first comment.
Like most 1/2 tons, you will be further ahead with a travel trailer than a fiver because a TT puts a lot less weight on the truck.