um,same place as an a2,,,,or its below,and to the right ofwhere the notches are on the head gasket,,if you still see that part of the gasket,,,,,,below front water outlet on head,,on the block,,,in the # 3 cylinder area,,hope that will explain better,,,bring some sandpaper,and maybe a wire brush to read it,and then you only really need the first 2 letters