Another shock question...i know i know...

1.03’s and Bilsteins shouldn’t be that stiff. They’ll ride firmer than stock, but that combo shouldn’t rattle your fillings.

The SS springs, on the other hand, will. They’re stiff as hell. Beyond that, I would make sure that you’re not riding on the bump stops and that none of the suspension is binding up (ie, adjustable strut rods set to the right length)

I ran my Challenger with SS springs in the back for awhile. Even with 1.12” bars up front the SS springs were too stiff. I replaced them with XHD’s and the ride quality and handling improved