I don't think I'd try 40's on stock axles and without switching to long arms.
Then you need fully hydro steering to move all of that meat around, unless you're ok with only turning when rolling.
Anyway, less caster seems to have somehow moved something in a favorable direction, so that's good...
No. I am still trying to decide on whether to do that or find a solid 4.0 TJ and keep the Canyon for longer trips and comfort.
The problem with another vehicle is it requires another garage.