Eugene Casaroll, the proprietor of Automobile Shippers Incorporated, was the individual responsible for the creation of the Dual-Ghia. The design was inspired by Virgil Exner's Dodge Firearrow, later called the Firebomb, show car. When Chrysler decided not to produce the car, Casaroll purchased the original Firebomb show car. It was re-engineered for public sale by designer Paul Farago. The interior room was increased, as was the luggage space. The chassis was from Chrysler, which was sent to Turin, Italy to have Ghia create the coachwork. Ghia had created the original Firebomb body, thus were the perfect craftsman to create the production vehicle. When the bodies were assembled, they were shipped to Detroit where Dual Motors fitted the drive-train and interior trim. The first series was equipped with Chryslers D500 and D500-1 engines. The D500 displaced 315 cubic-inches and produced 230 horsepower. The D500-1 had a larger, 325 cubic-inch displacement and 260 horsepower.

Production of this series lasted from 1957 through 1958 with a total of 117 examples constructed. There were two convertibles and the rest were coupes. The cars were competitively priced, considering they cost less than a Cadillac Eldorado and the Lincoln Continental. Just like many new automotive upstarts, the Dual Motors Company lost money on every car.