The 411 ecm is found common ecm in 1999-2006 GM vehicles with LS motors with either a blue and red plug or a blue green ecm plug. The bodies of the ecms are the same regardless of plug colors on the 411 ecm. Our mounts install by removing the four torx screws in the corners of the ecm and install our mounts on each side.
Kit comes with two mounting plates. One for each side .
mounts come unpainted in raw steel finish .