Spring Trunk Popper '66 Barracuda

My trunk has no popper right now so it'd be nice to have. Looking for the round part and its assembly like in the pic below. Mine didn't come with one, and not even sure the metal bracket is installed correctly. Thanks
First pic has the part I'm looking for. The 2nd and 3rd are mine and looks like there was some butchery done. May need the bracket too if that won't accept the popper proper.
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