UMI’s 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. UMI’s 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. UMI’s LS mounts place  the LS engine in the factory location with the ability to move the engine  rear-ward  up to 1”. LS mounts are CNC  laser cut from 3/16” thick steel with MIG welded ¼” thick stand offs, high  grade mounting hardware included.