I don't believe I ever saw one on anything but a Toronodo. I think the duel snrokle was used on Tornodo to get more cooler air if with the front drive making more heat in the engine compartment, We had lots of Oldsmobiles in the 60s.70s,and 80s. Shame to see such a popular and pioneering car gone. I drag raced a 54 Stick Olds before getting into Packards.