The different size bushings rings a bell from a former thread. There have been a couple of threads on '70 HEMI E-body rear springs, maybe that's where the 2 bushing sizes was asked about. I have a loose pair of '69 795/965 H.D. (HEMI) rear springs, I can check over the weekend to see if there bushings are the same. Is the 2" bushing in the right spring?