twofosho said

Of course I can't know what others are using, but my XHD 340 replacements are asymmetrical (different number and length of leaves). Mopar originally did that to counteract torque reaction and plant the right rear tire. That alone can and did cause the rear of the car to sit uneven in my case. A simple torsion bar adjustment leveled the car side to side and raised the front up enough to give the same tire to fender lip gap all the way around alleviating any suggestion of the stink bug phenomenon.

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Johnny Dart said

You are mistaken,and twofosho is dead on with his assesment on the 340 xhd springs. Have the same pair on my Dart.There are two different part #'s. The right side does sit higher on them,and adjusting torsion bars to your perticular taste is a common practice.
(Rear right high,raise front left). Guys back in the day use to adjust the torsion bars with the driver in the car.When the driver would get out of the car, the front left seemed a bit high depending on their weight.

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