Question about hauling 3, 80’s vintage trucks a thousand miles...

You hitch each steer axle of a tractor onto the 5th wheel of the driveaway towaway vehicle, disconnect axles to tires on ground, shafts etc of the towed tractors.

You can take three to one towing tractor's 5th wheel on each others 5th wheel.

Its not my forte' but others will chime in.

 

Any flatbed would work, load with a rollback wrecker.

 

I’ve hauled 2 cars in my dry van, put pallets in the nose, and in between both. Set parking brakes, and a strap across the back for good luck.

 

Full size pickup is 20' long. You can get 2 of em on a flatbed without stacking them. If there's enough room for overhang at the front, you might get all three on there.

 

3 p/u trucks will fit on a 48 ft. flatbed with no problems

 

40 Marine Trader? What year?

 

You need to read the OP again, no tractors involved here, just pick up trucks.

 

Indeed.

There are probably car transport trailers small enough to transport all three for a shipping charge in one trip.