They are under the engine and connect it to the subframe. The front mount is below the A/C compressor and the large bolt to the subframe is visible from under the subframe. This is the mount that takes the torque of the engine in forward motion and wears the fastest. The rear mount is located below the power steering pump. There is also a transmission mount over by the driver side wheel well, but this mount rarely wears out.
You will need to specify the transmission type when you make a post since there are distinct differences between the two SHO drive trains. The motor mounts are very different in style and construction and not interchangeable.