The body was dropped onto the frame and it gave way.
The whole trunk section was cut out and welded into his car.
Yes that's what I did for my 68 Chevy convertible restoration. Sacrificed a rust free 4 door sedan to get the trunk pan and drop-offs as well as the full floor pan and inner front fenders. The rest of the replaced sheet metal were NOS GM parts, except the domed hood which was mint and original to the car, and two excellent doors that I got from Canadian Poncho member Cheviac. I'm using the original frame with its posi rear end, 4 piston disc brakes and F41 sway bars.
