You would need an adaptor to use 2 full flow filters with it since a full flow and a bypass use different threads. Also the amsoil dual bypass filter mount has a special valve that diverts only a small amount at at a time to the bypass filter and more to the full flow filter so that mounting system is not suited for two full flow filters.
I really dont see a need to have 2 full flow filters anyhow. When not using a bypass setup you would not want to go much more then 5k between oil changes and at that interval, your regular full flow filter would not be clogged anywhere near the point of making 2 full flows worth while. Just keep your stock filter where it is if you are not going to put a bypass filter on there anyhow