NEW YORK — Rupert Everett and Chris Rock are making deals to star in the Fox comedy “High Boys and Low Boys,” sources said. While the pairing would not have been noteworthy a year ago, that was before Everett won raves in the hit “My Best Friend’s Wedding” and Rock took home two Emmys for his raucous HBO special.Fox is working to close deals with the actors before landing a director for an April start. The film is scripted by Joe Forristal and Dirk Wittenborn, and produced by Paul Schiff and Michael London’s Horizon Pictures. Rock will play a street-smart guy who’s on the run from the mob. He hides in the stuffy New York world of antiques dealing, where he teams up with an antique dealer (Everett), and finds the business is as crooked as the one that got him in trouble in the first place. The script’s being rewritten to suit the stars. Everett, who’s repped by ICM’s Nick Styne and managed by Marc Epstein, is rehearsing for a London revival of Tennessee Williams’ “The Milk Train Doesn’t Stop Here Anymore.” He’s also writing “Martha and Arthur” for himself and Julia Roberts, and the gay intelligence agent comedy “P.S. I Love You.” Rock, repped by ICM and 3 Arts, is back hosting his HBO talkshow. He is also about to release his Hyperion book “Rock This,” and will co-star in the Kevin Smith film “Dogma” at Miramax.