(4-traders.com) The securities litigation law firm of Brower Piven, A Professional Corporation, has commenced an investigation into possible breaches of fiduciary duty and other violations of state law by the Board of Directors of Metaldyne Performance Group Inc. (NYSE: MPG) ("Metaldyne" or the...http://www.4-traders.com/news/Brower-Piven-Commences-An-Investigation-Into-The-Proposed-Sale-Of-Metaldyne-Performance-Group-Inc-A--23386716/