As I have mentioned several times in the past, one of these days Montana will get around to offering a rear 2" hitch receiver as an option. An I bet it will have perhaps a 200 - 250# weight rating.
With the Mission tires, they have increased the tire load capacity to 7000# per axle. The time will also come when they will offer an axle and wheel upgrade to the 7000# per axle rating. This will then allow those who want to pay for the options, to be able to carry more cargo and still be legal with respect to the trailer.
Just my opinion.
I am taking my 5'x8' tag along trailer for a brief tow behind my 3400 this weekend. Tongue weight is 180#. I'll let you know is something unexpected falls off.
Rick & Wanda
2003 2500HD Crew Cab
Duramax with Allison Trans.
Firestone Airbags
Glide-Ride Pinbox - It's Great!
2006 3400RL - We Love The Trailer!
Montana Customer Service?