s6 to V-8 do I need to change torsion bars

I beat the crap out of my v8 duster with slant 6 bars . never had an issue. Pot holes, speed bumps, driveway transitions, you name it , been there done that.

I wonder what the determining factor there was then?
The bars that were in my car when I got it were 890's and they were pretty mushy.
Felt like driving a boat in lake.

Hmm