For a travel trailer it’s not the weight, the problem is the wind load. Crosswinds are the cause of the majority of loss of control accidents.
These trailers —all aluminum aero design — do have differences in suspension which are greater than with aero.
That TT may still be riding on a leaf spring suspension. The upgraded MOR/ryde came in around 1968
or so, IIRC.
More wheel travel, and greater resistance to getting sideways due to road surface problems would be the result of changing to a torsion axle.
Any Dexter Axle dealer can measure, order and fit.
It’s a valuable trailer in that it’s yours and fewer survive with each five year period passing.
The leaf spring arrangement would need to be completely disassembled and rebuilt at any rate. “Looks okay” isn’t acceptable for this trailer type.
It will tow distinctively better. And will ride softer. Brand new brakes are also a benefit.
A new breakaway switch needs to be installed on the TT, and the safety chains carefully examined (Id replace them). Also a new seven-way cord from the trailer end.
Brake wiring is a concern on a half-century old TT.
I’d install the TUSON TT electronic anti-sway no matter what. Reacts faster than the ones on new vehicles.
Vehicle exterior LED lighting isn’t optional. MUST be done. Literally, NO ONE can “see” ancient incandescent.
As to a WDH with integrated anti-sway, the Equalizer brand shouldn’t be on your list. The two most experienced AS shops won’t even carry it.
The Reese Dual Cam is still the best conventional WD hitch. Others are farther down the scale in effectiveness.
The hitch in a class by itself is the Hensley Cub. Eliminates sway. TW won’t matter if a WD isn’t needed. It’s the one I would choose. New or used.
Conventional WD hitched depend on bar bend to effect sway resistance. The Cub doesn’t.
A TW of 350-400 pounds is right at the margin for needing weight distribution.
Brochure weights aren’t reliable. Fill the fresh water tank and propane bottles and put the gear in the TT you’d take with you. Short of maybe food and clothing, this will be good enough to find the TW.
Download the CAT Scale phone app and locator.
With trailer in tow, cross the scale once. Park the trailer and go back across the scale with the TV only.
The weight difference on the Steer and Drive portions will be the TW.
You’ll also have a better idea of what the TT weighs.
A similar method would be used to set the WD hitch.
If above 400-lbs Id say it’s required. Even my one ton Dodge requires it at that point.
Get the numbers.
Tires are an equal concern. Quality trumps other considerations here also.