Mounting 63 Dart to rotisserie

I am getting ready to mount my dart onto my rotisserie so I can rotate it for easy access to the underside to clean and paint it. No rust repair as the car is a dry Nevada car. Original paint so nothing is hidden.

Question I have is, my plan is to mount it by using the original bumper mount holes. On the front I see this as ideal as they run along the side of the frame rail so really good support there. In the rear I don't see any other really good option. I know the car was lifted by this point by the bumper Jack to change tires back in the day so that point should be sufficient to hold it. Has anyone used a different location to mount the body?

The motor and transmission are out along with all interior and rear glass as well. I don't plan to pull the rear diff or the front suspension. My mounts are more than heavy enough as it's my rotisserie. Built it myself and built it heavy.

From others whom have done this already, any tips or things I should look out for when mounting it.

Suggestions are welcome.

Attached is a photo of the rotisserie I plan to use. I have seen a dart mounted to a rotisserie the same way I plan to and it actually looks complete so I figure I should be good to go.

The mounts on the rotisserie were generic ones I made when building it. I am currently building new ones to match the car mounting points specifically

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