UMI Performance 74-92 GM F-Body 78-88 GM G-Body LSX Motor MountsUMIs P N 2406 allows the installation of LS power into your 1978 1988 GM G Body, 1982 1992 3rd generation Camaro Firebird and the 1974 1981 2nd generation Camaro Firebird. UMIs LSX adapter plates bolt directly to the frame and allow the installation of any LSX engine. P N 2406 fits factory LS engine mounts and also works with UMI P N 2323 solid aluminum motor mounts. UMIs LS mounts place the LS engine in the factory location with the ability to move