I run 1.12" torsion bars on the Challenger as well, although that's a wheel rate of 270 for the E-body. But I wouldn't think the higher rate bars would have a huge effect on the UCA's, the primary suspension load is on the LCA.
Definitely doesn't bode well for the heims on my Challenger. And of course, with the boots installed its much more difficult to visualize the wear on the heims. :violent1: