My TT is a 27 ft at 7000lb.
Towed with a 99 Tahoe 1/2 ton with lots of mods.
Air bags, upgraded brake master cylinder, better rotors, Hawk pads, Rancho shocks, HD tow package with 3.73 and HD Trans cooler, 05 Denali electric cooling fans, 1.6 ratio double roller rockers, Vmax intake manifold, Jantzer ported throttle body, 0411 LS1 PCM with custom tune, long tube ceramic coated headers with 3 " exhaust, Flowmaster 50 muffler. 20" wheels with XL tire ratings.
Truck is pretty bad ass.
Then I got a 2000 Ford F-350 crew cab long bed 7.3 diesel dually.
NIGHT AND DAY DIFFERENCE!
No more crappy braking, no more getting pushed around by the trailer, wind or semi's. Now more lack of torque, etc.
I would never tow my trailer with the tahoe again holding both hand on the wheel at all times.