Which Torsion Bar?

I ran 1" torsion bars from Just Suspension for awhile in my Duster when I had a 318/904 in it and was running 225/60/15's and Bilstein RCD shocks . While they were still a tremendous improvement over the stock torsion bars, there was still a lot of body roll with cornering and the ride was pretty soft still, and that's with racing/sport buckets. I wasn't running sway bars at the time, so that would have helped some of the body roll, but the bars were a lot softer than I thought they would be for the Abody platform.

Which is why I went up to 1.12" bars, and added a 1 1/8" Hellwig front sway bar and a 7/8" Hellwig rear bar. I also added the Hotchkis/fox shocks with that upgrade, as well as 18x9" rims with 275/35/18's in the front and 18x10's with 295/35/18's out back. I still don't think the car rides bad, or harsh. More like a modern performance car for sure, and probably stiffer than most people want their muscle cars for street use, although I wouldn't change it even though I drive it on the street 99% of the time.

With the added weight from a 400 up front I think the 1.03" bars are a no brainer. Even the 1.06" bars are about 16% softer than the 1.12's I run with my small block.The roads over there are narrow and winding!