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Number 2 is the 1949 Belanger Special with a 325 hp, 270.2 cu. in. Offenhauser engine.
Number 3 may be what was known as a Fronty Ford. A Model T based race car, with Frontenac aftermarket engine modifications. Frontenac was a company started by Louis Chevrolet and changed its name after he left. Like a hot rod, there was no standard look for a Fronty Ford.