With buzz of the project rising, Legendary has brought in “Iron Man 3” scribe Drew Pearce to do a rewrite on “Godzilla” before it gets the casting process under way.

“Godzilla” has gained a lot of momentum after Legendary previewed a short test reel of the pic at Comic-Con, and sources tell Variety that Pearce is now being brought in to do a four-week polish on the script.

Gareth Edwards is helming the pic. Legendary’s Thomas Tull and Jon Jashni will produce, along with Roy Lee, Dan Lin and Brian Rogers. Alex Garcia and Patricia Whitcher will serve as executive producers alongside Doug Davison, Yoshimitsu Banno and Kenji Okuhira.

Previous drafts were penned by David Callahan, who wrote the original draft, as well as David Goyer and Max Borenstein. Sources add that the polish isn’t being done because Legendary has any major problems with the script; it wants to age up the characters so that they fit the prototype of the actors they would like to target.

Besides “Iron Man 3,” the WME-repped Pearce is also working on the script for WB’s “Sherlock Holmes 3.”