I would tack weld a brace from the rear of the left door jamb to the front of the right door jamb and from the front of the left door jamb to the rear of the right door jamb creating a big X brace. With this brace in place the car cant twist, spread apart or come together.
As long as the roof and 1/4's are solid the rear area will be fine, especially if you leave the taillight panel in place.
As long as you weld the brace together at the X you can use an engine hoist to pick the body up by the center of the X brace by going in thru the door opening. If you have an engine leveler use it to balance the body from front to rear.
If you are leaving the rear wheelhouses in then maybe put a brace between them to help keep the rear portion of the body the correct width.
Just keep one major thing in mind. The piece you are sitting the body on is a reproduction piece, your body will not fit onto it exactly without some modification somewhere, I guarantee it!!
the other thing is to make sure the new setup is good and square before you set the body on.
Now that I have wrote a book(sorry) have fun and keep us posted with your progress.
As long as the roof and 1/4's are solid the rear area will be fine, especially if you leave the taillight panel in place.
As long as you weld the brace together at the X you can use an engine hoist to pick the body up by the center of the X brace by going in thru the door opening. If you have an engine leveler use it to balance the body from front to rear.
If you are leaving the rear wheelhouses in then maybe put a brace between them to help keep the rear portion of the body the correct width.
Just keep one major thing in mind. The piece you are sitting the body on is a reproduction piece, your body will not fit onto it exactly without some modification somewhere, I guarantee it!!
the other thing is to make sure the new setup is good and square before you set the body on.
Now that I have wrote a book(sorry) have fun and keep us posted with your progress.