Every coil over conversion available for Mopars claims or has claimed improved geometry. Exactly none of them have ever published the improved numbers. On a couple of occasions when customers have checked geometry, the OOTB numbers were not a slam dunk improvement over torsion bar suspension.
Using a suspension program does not guarantee better geometry. It does show it to you, which would make it easy to publish those improvements, whatever they are.
Bump steer isn't even really an issue with the torsion bar suspension. That has been plotted for the A-body suspension and published, and even with factory components and no bump steer correction the bump steer numbers are well within the acceptable range. Zero bump steer over the entire suspension travel is not a thing.
It's hard to tell from the pictures, but it appears that a very tall upper ball joint is used, as well as a very tall spacer on the steering arms to reduce bump steer. So right off, that's not improved geometry. If you need a 1" tall ball joint, the design of the suspension geometry has not been improved. Perhaps the
corrected geometry is better, but, you can correct the geometry with the torsion bar suspension as well.
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Again, this is NOT improved design. This is steering geometry that has been massively corrected. Now, perhaps the end result is very little bump steer. But if you bolt the rack to the steering arm the geometry will be abysmal. Again, any suspension geometry design has some ability to be corrected. If it needs this level of correction, the design itself is likely worse than OOTB factory suspension. And you can make corrections to the factory suspension as well.
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