The cabs are the same, the bigger trucks just have bigger front fenders and hoods.
A buddie and I have lifted empty cabs off frames before and put them on my cart no problem. These were bare cabs, no seats,fueltank, glass anything that comes off was off. I've also done it with a less stripped cab with 5 guys two on each side and the extra guy pushed the frame out from under the cab when we lifted and pushed the cart under it so we didn't have to walk with it. Also lifted one by myself with a chain hoist, some big straps through the top of the cab and an A frame.
Two weekends ago at a swap there was a guy with a bar you put on your cherry picker to lift cabs I took pictures of it, will try to track them down and post em...
MONGO


Mongo's Garage
Vintage GM Truck's & Parts
https://mongosgarage.com