Does a 91 Camaro rear axle in 95 Camaro?

No, a 1991 Camaro rear axle will not directly fit a 1995 Camaro without significant modifications. While both are third-generation F-bodies, there were changes made to the chassis and suspension between the 1991 and 1995 models. The axle housing dimensions, spring perches, and potentially even the differential itself may be different, preventing a direct swap. You'd need to address these incompatibility issues, which is a significant undertaking.