Do the end links (outside attachments) vary with specifics to bar thickness? Not saying those links have anything to do with how thick the bar is, but maybe how thick the bar is leads to different size/fit/length/hole size for the links?
I ordered some of a 'one-each' set said to fit my car from Energy Suspension. They are listed as 'L 1-5/8 in.' which is a term I cannot even guess at. It's not 'Length', and a 1-5/8" diameter seems way too big.
Having seen references to 15/16", 7/8", and even 1"+, I was getting to wonder where my 13/16" came into being.
Not likely something that was ever fussed with. I bought the car in '75. I have replaced the end-link bushings, but never touched the center mount bushings.
Thank you for the responses autox and 66fs. I appreciate the learnin'.