I did close to same on my 49 sub but used an engine hoist to lift. I removed front clip and uses the brackets that hold hood struts on firewall in front and rear bumper brackets in back as lift points.You can remove some air from tires if required to reduce lift. Just go slow and be safe as these are heavy.
Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison Things may come to those who wait...but only the things left by those who hustle."-Abraham Lincoln
The body has since been transferred to my rotisserie but with the sheet metal/plywood construction of the base of the body, I got two 12' lengths of 3x3 3/16" wall tube to run the length of the body for full support. This allows me to keep it mobile for abrasive blasting the underbody as well as do all my sheet metal repairs at the rear corners without the frame rails in the way.