The A-R-B passenger-side axleshaft (bottom) is 26.25 inches long, tooshort to fit the Mustang housing. This is why you'll need two of the29.16-inch driver-side axleshafts (top). When it comes to brakes, manyA-R-B light trucks came with 10-inch brake assemblies (left) that boltdirectly to the ends of the Mustang housing. Our donor Mustang's 9-inchdrum brakes were recently rebuilt, so we simply selected a good set offive-lug A-R-B drums (center) to match the axleshafts. On the right isone of the Mustang's original four-lug 9-inch drums. Good riddance.