When I bought my 69 3 years ago, I towed a tandem axle uhaul trailer for 300+ miles with my 2004 Tacoma 4x4 crew cab. It did ok with just the trailer, but when I put the bronco on the trailer I saw the rear end squat down big time.
I overloaded that poor truck.
My dad was 70 years old at the time, and I swear he hardly said a word on the trip back. When the trip was over he told me he didn't think we would make it home.
He said he was praying the whole way.
The guy I bought it from lived in Fairfield, Ca. It was about a mile up a steep windy road to his house. I remember my dad saying, "there is no way in hell you can tow that bronco down this hill!! It will push us off the road and kill us!" Lol.
When we got to the guys house we saw he had a new dodge dually diesel. He thankfully towed the trailer down the hill for us.
The guy included a new tailgate, windshield frame, rock sliders, carpet kit, fender flares, a stereo with speakers, and boxes of miscellaneous parts.
The bronco had/has an ugly rear bumper that weighs a ton, and an old school tube bumper with a warn winch.
That plus the car trailer was way too heavy.
I was really wishing I still had my super duty diesel.
I towed the 300 miles home with my headlights shining on the underside of overpasses.
I was lucky that I wasn't pulled over by the chp.
I took it real easy on the way home, and I kept plenty of space behind other vehicles.
I think an emergency stop would have been a bad thing.
At least it was a lot of flat ground on i-5 on the way home.
A heavier truck for towing is the only way to go. Especially if you'll be on windy and steep roads.
Fyi- my Tacoma has icon coilovers and 8 leaf deavers. I'm also running 285/75/16 bfg "E" load tires. I think my tires were the only thing on my truck made for heavy loads. Lol
131k miles and is running good.
I wouldn't do it again. Plus, The Uhaul trailers have a surge brake. So it has to push against your vehicle to apply its brakes. I really like my Tacoma, but sometimes I wish I had a full size truck again.