Stephanie J. Block will temporarily take over for topliner Sutton Foster in the Roundabout Theater Company’s strong-selling Broadway revival of “Anything Goes” for a few weeks in November.Foster will exit for two to three weeks, with exact dates still to be determined, in order to shoot her role in the new ABC Family pilot from Amy Sherman-Palladino, “Bunheads.” While she’s away, Block (“9 to 5,” “The Pirate Queen”) will fill in as nightclub singer Reno Sweeney, appearing alongside original cast member Joel Grey, as gangster Moonface Martin, as well as fellow “Anything Goes” cast members John McMartin, Kelly Bishop, Colin Donnell, Adam Godley and Erin Mackey. Foster won a Tony for her perf in “Anything Goes.” (It also picked up trophies for tuner revival and choreography.) She’s also a central component in the production’s advertising. Block’s replacement stint is poised to serve as an indicator of how well the show can perform at the box office without its most prominent star, a fave among Broadway theatergoers who is not as well known among casual tourist auds. Extended run of “Anything Goes” is currently on sale through April 29, with Foster otherwise skedded to remain with the show for the duration.