Word on director Michael Bay’s relatively low-budget passion project Pain and Gain is that Scott Rosenberg (Con-Air) has been brought on to punch-up the screenplay originally written by Stephen Markus and Christopher McFeely (both of Captain America: The First Avenger). Based on a true story, Pain and Gain follows the saga of a group of bodybuilders in Miami that engaged in an extortion scheme which wound up spiraling out of control to include kidnapping and torture. The writers compared the tone of their darkly-humored film as based on that of the Coen brothers’ film, Fargo. Dwayne Johnson and Mark Wahlberg are attached to star in the pic alongside Ed Harris, Rob Corddry, Anthony Mackie, Tony Shaloub and Bar Paly. The film will shoot on location in Miami later this month. Hit the jump for more on Rosenberg and Pain and Gain.