Kuzalisha toleo ngumu zaidi ya sentensi hii injini Chevrolet zilijengwa na Traco Engineering (Jim Travers na Frank Coons).
Bila shaka, toleo ngumu zaidi ya hukumu ni "injini Chevrolet walikuwa kujengwa na Traco Engineering (Jim Travers na Frank Coons, jina la utani'' Whiz Kids''), wajenzi wa maarufu mfululizo (1953-54) Indianapolis 500 - kushinda mbio magari inaendeshwa na dereva maarufu Bill Vukovich. "