Whats a convertible without its top? This convertible top assembly is new to the market and is a perfect fit for the 1955-1956-1957 convertible models. If youre thinking about converting a hardtop to a convertible, this convertible top assembly is a must have for the project. The assembly lets you replace any old rusted or damaged bows or headers. Its shipped truck freight in two boxes. The assembly comes with a header and three bows. It is made in Canada. The assembly includes assembly bolts. Mounting brackets are sold separately at CARS Inc.