Battery Hold Down Clamp: 70-81Firebird TA (* Note)This is the twin sided clamp that goes ACROSS the battery and is held from the bolt on the radiator support panel to the vertical ROD that runs from the TRAY up the side of the battery to THIS clamp or strap if you want to call it that. * NOTE: When you get to know these cars.. this is truely only correct for 70 76 models.. but as no alternative is made for the 77 81 models.. using this is the next best thing to solving the problem but just be aware.