that loop is the floor brace and since the transmission is 3" longer than what was in there the brace ends up being directly under where the u-joint is so the bracer won't fit any longer. I put a spacer on mine so it sat lower to give clearance for the yoke. I'll be fabricating a new brace this winter. The brace does have a duel purpose in preventing the driveshaft from falling in case of failure