CREATE TABLE table_name_43 (year INTEGER, engine_s_ VARCHAR(255))
Name the sum of year for engine of brm p202 3.0 v12 brm p200 3.0 v12
    
SQL: SELECT SUM(year) FROM table_name_43 WHERE engine_s_ = "brm p202 3.0 v12 brm p200 3.0 v12"