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Here's a link to a guy on E-bay with a 2bbl. setup (even though he says it's for a 4bbl). The lower section should work for you but the upper bell crank needs to be a 4bbl only type. Your carb doesn't look like a factory Mopar unit so who knows if the stock parts will work. You may want to look into a Lokar system to save time, money, and headaches.
1964 1965 1966 kick down linkage cuda dart valiant : eBay Motors (item 1604321