The Wildcat, Electra and Riviera used the same front drums (1965-1967) -- B, C and E Body. Rotor was Part No. 1230734 and Calipers 1231936 (R) and 1231937 (L) I believe. But frankly, why keep drums. From a safety perspective, you'd be better off replacing the front drums with disk brakes, especially if used in heavy traffic (stop and go) or in rainy places (e.g. Oregon, PNW).
