At the time of AMC's buyout, Chrysler was designing the replacement for the then-new Dodge Dynasty, a mid-size car. The proposed replacement bore a direct resemblance to the existing Dynasty. However, with the purchase of AMC, a new product design system was instituted and work began by using AMC's Eagle Premier platform. According to Robert Lutz, the in-house design was scrapped entirely and the new design, under Castaing's leadership, was selected. The Chrysler LH-cars were first to use Castaing's platform approach. These new models were produced in a record 39 months, compared to other Chrysler cars that took more than 50 months. The Eagle Vision, Dodge Intrepid, Chrysler Concorde, LHS and New Yorker were all produced in AMC's state of the art Brampton Assembly plant in Brampton, Ontario, Canada that was built to make the Eagle Premier.