Maybe he'll use Joe Pesci as an enforcer against the Japanese. Pesci is 5'4" tall so at least, height-wise, it'll be fair. If Pesci isn't available, he can use Martin Sheen, who is 5'6" - or better yet, instead of having Sheen thrown off a roof, like he was in Scorsese's The Departed, they can chop his head off with Samurai swords.