Joaquin Phoenix, Toby Maguire, Heath Ledger and Leonardo DiCaprio are the leading contenders for the main role in the American remake of the French art-house hit “13 (Tzameti).” At the Eurasia Film Festival in Kazakhstan, Gela Babluanis, who directed the original – about a high-stakes game of Russian roulette – told Post film editor V.A. Musetto that he also would helm the new version, using an all-American cast. Babluanis said he was scouting locations in New York and New Jersey.