Here in Canada M sent out a cable kit that went from exhaust stud to loop around upper control arm bracket to limit engine movement until the replacement mount with the hook were available
Yes, I was on the bench in those days. The real concern was the ignition wiring bracket rolling up and jamming the throttle linkage likely at or near full throttle. You had to be on it to make the engine lift then things went downhill quickly. Only way out was to put it in neutral or turn off the ignition. Standing on the brakes just kept it jammed open.
1966/67 Ford Magic Cruiser One-off Based off of the 1966 Ford Fairlane, the Ford Magic Cruiser combines the ideas of a sports station wagon and a fastback. One of the specifications given to George Barris, who was hired by Ford to build the car, was that the movable roof section rise within seven seconds. A series of aircraft hydraulic systems, screw jacks, and a switch on the dash made that possible. Lowering the tailgate allowed for easy entry to a rear-facing third seat and like Ford’s production station wagons the second and third seats could be folded down for additional cargo storage.