Originally Posted By cudaman1969
Sheet metal is just hanging there, but like my inspector said, you have two cages, body and roll cage.


Exactly. The formed sheet metal body is also a stiff and substantial structure. Use it. With some planning, the body and the new chassis/cage can be made to support and reinforce each other, making the assembly stronger than if the body was just along for the ride. Tie them together, beyond the mounting points called for to get the cage in the car, to create one assembly

If the results don't match the theory, change the theory.