So today I disposed of the shell. Once the roof was off I was able to simply rip the front half of the car off the pan by hand, nothing holding it on but silicone and rust. The rear half only required the bolts across the rear of the pan to be removed and rip.....off it came , replacement heater channels stayed complete and on the pan and did not seem to be attached to the car at all. Wait .... there's more , now for the pan halves , same thing , fully removed by HAND !! No cutting or grinding. There was really nothing holding that car together.
Emilio , I have a big box full of all the little parts and pieces which you may be able to apply to your 66 project or ..... , also still up for grabs wheels & tires , gas tank , rear & side glass , right front fender , bumpers........