SUPERPUSSYVIXEN, GO FASTER, KILL, Sweetback Productions, at National Pastime Theater. When the Sweetback folks opened their send-up of Ed Wood’s famously bad Plan Nine From Outer Space two years ago, they set a new standard for shows based on appropriated material. Unfortunately, nothing Sweetback has done since has been as inspired or well done. Their last show, Female Trouble, was a misguided attempt to parody a parody. And their current show isn’t much better. The sloppy, noisy Superpussyvixen, Go Faster, Kill has been cobbled together primarily from three Russ Meyer films, Mudhoney, Motor Psycho, and Faster, Pussycat! Kill! Kill! But it never quite achieves the energy, mood, or (perhaps unintentional) subversive tone of Meyer’s exploitation flicks. The women in the show aren’t sexy or dangerous enough–though Roxanna Ratossa and Timothy James-O’Brien as a pair of sex kittens come close. And David Cerda’s script only sporadically captures what makes Meyer’s films fascinating: the wonderfully bad dialogue, the extreme characters, and his ambivalence about assertive, large-breasted women.