Does this need to be Replaced?

I replaced the rear trans mount on mine with a new one. Energy suspension mount from what I recall. No press required with a new mount. Supported the rear of the trans with a jack like you are suggesting. I also replaced the rear seal on the transmission tail housing at the same time. I would reinstall that weight for balancing. If weight reduction is a priority, I’d suggest removing the bumperettes on the front and rear bumpers. They are 6 pounds each.