There is a little, tiny "T nut" that attaches to the small cutout on the dogleg. Problem is, most people bust that section when removing the piece. I've passed up many a used piece that was otherwise very nice due to this issue.

1968 GTX hardtop
1968 Sport Satellite Convertible 383/4spd
1933 Plymouth coupe
2002 Ram 2500 oil burner 4x4
2015 Grand Cherokee
2013 Challenger
1957 Chrysler Saratoga


Man...I need a bigger freakin' garage.