Back when these cars were just cars I routinely towed my dirt bikes to the motor sports park here with my 69 Superbee. It had the A35 HD trailer tow package and was rated to tow up to 4,000 lbs. and did so quite well.
My dad towed a big Layton travel trailer with a '67 Chrysler back in the '70's.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.