NEW YORK — Anna Sui’s going to rock the tents Wednesday night when the designer shows her take on Mod. “I’m inspired by old and new bands like Elastica, Oasis, The Who, early Beatles and the Kinks,” says Sui. Her glen plaid wool hip-hugging pantsuit and snake-pattern vinyl shirt with cotton cuffs and collar, complete with winkle picker shoes, is pure Marianne Faithfull. For a countdown to the New York shows, see pages 4 and 5.