Heaviest GVW on a square body?

[79vette]

I've seen square body trucks with rollback bodies on them, and would like to buy or build one someday. But I'm having a hard time imagining how anyone hauls anything with them?

The cab and chassis crane truck in my signature has the narrow C&C 14 bolt, which is the heaviest axle I've ever seen in a square. GVW per the door sticker is 10k lbs. I'd guess the truck and cab are at least 4500 lbs with a 350 and 2wd 4 speed, likely more if it was a big block and 4wd. An aluminum rollback bed is probably at least 2k. So at the absolute maximum, a wrecker body on my truck could carry up to 3500 lbs without being over GVW.

Once you figure the driver and passenger and under body toolboxes full of stuff, I could barely tow my Corvette without being overweight. Are there heavier GVW square bodies out there, or are people who build rollbacks on these just overloading their trucks and hoping the cops don't ask any questions?