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

I have been such a quitter a number of times. Hopefully taking away the car motivates me. No way my wife will cave and give the keys back until she is looking over my shoulder and sees what the scale needs to show…lol.
And I don’t want her to.I know she won’t.
Haven't weighed under 300 since I was in my 50’s, I am 68.
Wow, you better get cracking quick. The one thing I always try to remember and live by is I never get to redo anything and I never get time back so everything has to have a purpose