How much weight gain from adding a Dana and roll cage.

Just a rough weight but I had a 5 ft long .1 5/8 .120 wall and decided to weigh it.
10 pounds. With that, I can measure what I have total length and have a weight.
I didn't weigh the bench seat and rear seat but I bet the bench is atleast 90 pounds and the rear 20 pounds.
I'm also redoing the floor and will weigh what I cut out vs what I put back in.