Need help Identifying Sway Bar

I bought 2 sway bars from a member here last year as early a body bars, but turns out they look to be for something else. I have a factory sway bar for an early car that measures 42 1/2" from hole to hole, while the ones I purchased measure about 39" and are somewhat thicker than my factory bar. The mystery bars also don't stick out as much in the front. Anyone have an idea of what these could be from? They were sold to me as from a 1966 Barracuda, but they don't match up. Could they be from a later A body? Pics are of the '66 bar compared to the mystery bar (purple).

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