Opposite Hand (Mold) Assembly

I am familiar with SW's "Mirror Components"  However, I am looking for the best way to create a (Left-Hand) assembly from a completed large (Right-Hand) assembly. The best way that I can think of is to make mirrored components of each item and then build the opposite hand assembly using mates. The (Left-Hand) assembly has about 150 items. Some items are opposite hand, some are common. We are running: 2023 SP5     Thanks in advance!