Oh, I'm not arguing that it doesn't ADD support, I'm just saying it wasn't intended to. I know it's not gonna destroy it or anything either.
I don't do doorless but all of this talk of how the doors and hatch add ridgidity really makes me wanna do a cage of some sort.
I didnt even notice the steering wheel, thanks for pointing it out.
Personally I think that Jeep looks like ****, but thats just me. Ill take the tires and engine, and scrap the rest.
Think of the XJ body as a cardboard box. When whole, there is a fair amount of structure to it and while still weak does resit a fair amount of twisting.
Now cut out one entire end of the box. You will notice it is now much easier to twist the box.
Now imagine that end is put back on, and cut out smaller rectangles on the side. While the box might be a little more flimsy, it still has a fair amount of structure since there is still a "roof, framerails" and sides of the boxes to resist the twisting.
While taking the doors off might have a small effect on the unibody, it is significantly less than it would be by taking the rear hatch off.