Used passenger side (right hand) front drum brake backing plate for 2-1/2 inch brake shoes on the Mercury Cougar, Ford Mustang, and Fairlane / Torino equipped with the 351cid or larger V8 engine.
Ford part # C9OZ-2012-A.
*NOTE* Excludes 1969-71 Mustang and other Ford/Mercury with 302 engines, which normally came with 10" x 2-1/4" drum brakes on the front.