Check it out. Someone at BA posted the scanned pages from cycle world who has a ARTICLE, yes, a actual article on the Tbird with more info than everything weve heard to date real facts and specs. Finally.
http://www.bonnevilleamerica.com/forums/showflat.php?Cat=0&Number=352906&an=0&page=0#Post352906
http://www.bonnevilleamerica.com/forums/showflat.php?Cat=0&Number=352906&an=0&page=0#Post352906