Nothing wrong with the mounts sold by Bergman AutoCraft. They may not match the 67-72 tabs, but that doesn't mean anything beyond the fact that they won't look original.
Mount the sway bar up, make sure it's centered, and then locate the brackets on the LCA. The length of the end links may have to change compared to a stock application, but that's not a huge deal. You just want the end links to be as vertical as possible. Hotchkis has good instruction on how to locate the tabs in the instructions for their front sway bar, since their front bar doesn't use the factory mounting tab locations.
https://static.summitracing.com/global/images/instructions/hss-22385.pdf
