Analgesia for reconstructive breast surgery can be a challenging undertaking; these women have often been through painful mastectomy procedures coupled with the mental and physical discomfort of chemotherapy and its attendant side effects. Additionally, the surgery itself can provoke significant pain; often requiring extensive dissection of soft tissue and muscle to provide flap coverage as well the real discomfort of tissue expansion. The literature has described 2 possible injection sites for the Serratus Anterior Block, however, no study has defined optimal location based on analgesia and duration. Patients will be randomized to receive a "deep" Serratus Anterior Block (DSAB) where local anesthetic is deposited deep to the serratus or a "superficial" Serratus Anterior Block (SSAB) where the local anesthetic is placed between serratus and latissimus dorsi. The investigator will then evaluate the difference based on pain scores, opiate consumption, length of hospital stay, as well as nausea and vomiting.