The mounts for the MTX and ATX are entirely different designs. The MTX's mounts are rubber and steel, the rear mount having a safety bolt already installed by the Ford supplier and hte front mount readily available with a safety bolt added by one of several sources. The ATX's mounts are rubber, steel and fluid and there has been no additional reinforcing added to them. They are short, stocky and much more free-moving than the MTX's rather solid mounts. The fluid-filled (hydraulic) ATX mounts were designed several years after the MTX's mounts and perform the functions of supporting and restraining the engine as well as dampening vibrations from being transmitted to the subframe. The Ford, or direct copy aftermarket mounts are your only option.