Rolls-Royce Corp., Indianapolis, Ind., is being awarded a $121,418,128 modification to a previously awarded firm-fixed-price contract (N00019-07-C-0060) to exercise an option for the procurement of 58 AE1107C MV-22 engines.  Work will be performed in Oakland, Calif. (70 percent), and Indianapolis, Ind. (30 percent), and is expected to be completed in April 2012.  Contract funds will not expire at the end of the current fiscal year.  The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.