You "tub" would likely come off in peices if its badly rotted anyway,even if you had a crane to lift it off with,chances are good it would fall apart once its off the frame................................................................................................................................................................................................................you can take all the body mount bolts off and the other stuff like steering colum,gas tank filler hose, and brake lines and wires,etc,and jack up one corner at a time and keep blocking it up until you have enough clearance to put a 4x4 post or thicker under the body near the front floor and rear wheelwells ,and support the posts on sawhorses or 55 gallon drums ,so the rolling chassis can be rolled out from under it.....I've used a tree with a 6+" thick branch and a chain falls to lift a tub off the frame before too..or a gantry crane,which I'd trust more than a tree that might have rot!....................................................................................................a friend with a front end loader or bobcat is very handy at times like this.......a friend of mine is doing a cab swap on his truck,he is taking a severely rotted 87 Suburban body off and installing a cab,then he's going to make a custom flat bed for it,which will be 10' long,to use as a yard plow/firewood hauler and "fun" truck...
...
