Piece in question circled in white. Bolts circled in green came out with no issues. Bolt circled in red loosened up and now just spins. I can find a way to access the back side where a nut might be.
For orientation, front drivers tire is on left edge of picture.
Update: Got the front and rear springs, sway bar end links, and track bars installed along with the MOPAR extended lower control arms, Rock Jock rear drive shaft carrier bearing drop spacer, and Teraflex 1/2" front spring spacer. At 50 years old, that was enough for me spread over two days on...