Subframe connectors

I think it depends on what you're doing and WHERE in the build process you are. Had Chrysler installed frame connectors at the factory, they would have been installed when the car was in its infancy, with nothing on it.

I think it's probably best done at either extreme. With the car disassembled and supported correctly, or with the car completely assembled and on the chassis. Anything in between and you might be in for trouble.