You'd need the disc spindle of course & everything outward on it (rotor/horseshoe adapters/calipers/bearings/bolts). The LCA is the same & need the 73-76 UCA's or I believe someone sells a tapered spacer so you can reuse the early UCA since the disc spindle upper hole is larger (since the later ball joint dia/taper is larger) & needs a sleeve to take up that space. As Franken said use 76 A body calipers (2.75" bore) (remans are pretty reliable/cheap). The spindles are mirror images of each other & interchange from side to side & I'd mount em so the brake hard line/hose frame mounting tab is on the opposite side (front to rear) as the caliper unless sway bars make you mount em on the back side. In other words if the frame tab is rearward/behind the spindle then mount the calipers to the front side & vice versa & if you need a longer hose use one from a 78 volare & cut off HALF of the metal bracket clamped on the middle of the hose.