power brake booster reinforcement 1970 bee

does anyone know if my 70 bee is supposed to have the black reinforcement large plate behind the power booster on the firewall? I know manual brake cars have this plate. but not sure on 70 power brake cars. if so mines missing need one detroit area. thanks for your input

My '70 RR has one. Power, drum brakes. Don't have a spare though, sorry.