UCA/spindle & everything from the spindle outward. LCA is the same. The assy's are interchangeable from side to side but you want to keep the original orientation with the calipers on the opposite side of the spindle as the hose/hard line frame tab is (so the hose goes under/across the inside of the spindle to reach the tab) unless as said a sway bar makes you reverse that. rebuilt calipers are cheap/reliable & 76 (only) A body calipers have a larger (2.75") bore than 73-75 A body calipers (2.6") for more front bias which is always needed (& priced the same). I would get some Ceramic pads & consider doing a bed in procedure (google it). If a longer hose is ever needed ask for 78 volare hoses & cut off HALF of the metal bracket on the middle of the hose