There was a factory ram manifold w/ 4 bl carb in early 60s. Holman -Moody shop out of Charlotte, NC took a '60 or '61 Valiant to Daytona & ran 145mph w/ a "stock" slant 6 w/ this set up. They did do a good fine tune job on it, but it was w/ factory supplied & available to public eqpt. There was a guy down home (Altavista, Va) who had a '61 Dodge Lancer (a Valiant w/ a little diff fenders, trim etc) w/ ram man & 4bl w/ 3 spd in floor. It is my understanding he dusted off quite a few V8 cars around town before folks found out not to mess w/ him. Ovmf