ive heard talk of running the 1.9 metal headgasket on the 1.6 td, what is the benefit of this? when i heard metal gasket, are you refeering to a MLS gasket? and is it a 1.9 idi or 1.9 tdi gasket? maby a part # also. because mine is all apart and want to know if its something worht getting. il post a build thread soon. thanks for the help!