No E-body, but A-body, and using the stock '73 A-body knuckles.
An outer bearing spacer on the spindle and 2 washers behind the caliperbrackets was all I needed.

Oh and maybe the seals in the rear of the rotors which came from a GM transmission.

The C-body rotor swap also made the tracking width better, which is dearly needed on an A-body and wider wheels.