GM Vortec LS Series Engine Mount Kit Fits GM Vortec engines;Weld-in;Double rubber cushion on each side provides vibration isolation;Large 5/8 diameter bolt;Includes two engine side mounts, two weld-in gusseted frame mounts and rubber mount kit Advance Adapters Advance Adapters GM Vortec LS Series Engine Mount Kit - 713088 713088 Motor Mount