I flat tow fairly often. Most recently I have been using my 89 suburban to tow my 77c10, a 77 dodge warlock, and multiple jeeps. I own a universal tow bar that uses chains to attach the frame of the in tow truck to the towbar itself with some tension screws to lock them together. It will tow anything that has a metal bumper and sets up in about 20 minutes, sometimes 4-5minutes, usually al little adjusting is required.
Its rated at 8000lbs and cost me $60 from a local classified add.
I used to use them all the time about 10 years ago when I worked for uhaul. Those were a little heavier duty. I used one of those beasts to tow a 26ft international box truck with another identical truck. I avoided the city because sharp turns were not going to be fun, but it worked well. Usually they only towed a 14ft truck max. Those were f350 chasis. But still out weigh a k5 by a lot.
I am fairly sure uhaul will still rent them if you ask correctly. They are still legal, just not very popular because cars just don't have metal bumpers anymore. By asking correctly I mean "Hi I want to rent a tow bar. I will be towing with a big ass really heavy full size truck(biggest thing you can bring to the rental place) I wil be towing a 1947-1977 jeep cj5 its a stock 4cyl and weighs nothing.
The key to Uhaul is you have to have a curb weight of 750lbs or more greater than the vehicle in tow. So a big heavy 5700lb chevy would be perfectly safe towing a 2500lb jeep with big metal bumpers and solid frame. Even if by the time you take your nice tow bar out of the big heavy chevy and get confused as to what vehicle you were going to tow when you got home.
I used a uhaul truck and tow bar to tow my 70 cutlass, 65 thunderbird, 77 volare and lots of other stuff over the years.
As long as you don't drive like a moron you can even tow with similar weights. The problem is if the vehicle in tow is similar in weight it tends to wander. It is a lot harder to control something of similar weight. So you have to accelerate slower and end up with a max speed of like 55. Also its harder to stop all that weight. You really need to leave a very very safe stoping distance. Remember you have 2x the weight your brakes were designed to stop.
When my suburban tows my c10 its nice and smooth, but it knows its back there. As you get above 60 you really start to feel it wantder and tugg on the suburban. Besides the fact that the suburbans 350 just does not have the power to pull a 5500lb pickup much faster the wander makes you want to slow down. Same setup with my 59 willys in back, the burban did not know or care if it was back there. I was doing more like 70 down the highway.
Do not however try to tow a heavy thing with a light weight truck. While it is possible, it tends to end badly if the vehicle in tow is heavier than what is towing it. Thats ok at like 20mph, but after that you risk being thrown around all over the road or being flipped over on a turn.
If they do still rent tow bars, and I think they do, its like $45 a day maybe less. They used to be very cheap, but how often do you see them anymore. Oh on that note make sure to make a reservation for one early. Most places don't carry one so they will need time to transport one to the location you want it to be at. usually they transport trucks and equipment from one store to the next every two weeks or so depending on whats needed where.
Maybe find some cheap wheels and tires you can put on the back so you don't wear your good ones out.
