Locating sway-bar tabs
The factory probably never needed any specifications, to weld on sway bar mount tabs in their stock location.
Factory tabs are welded on, the lower portion of the arm, by the ball joint stud hole.
Pretty much welded on by the shape, and bends of the tab to locate it.
Nothing critical about it.
Here's a picture of what factory tabbed 65-72 LCA's look like, if it helps you out any.
