Corporate Structures for functional work teams efficiency

At XYZ Company, there is a department that works on projects regularly and is successful in producing a quality product. At this point they are the only department that works this way. The executive leadership of XYZ would like to move the entire company to a more project oriented atmosphere. There are a number of different corporate structures - functional, dedicated team, projectized organization, and matrix that can be found in a project oriented environment. As a project consultant, what structure would you recommend to this company as they move forward and why? Use specific examples to support your answer and cite references if needed.