These 2 photo galleries show us both the 911R and 906 Magnesium Intake Manifolds. The 914-6 GT used the same Magnesium intake manifolds as the Porsche 911R. The 906 intake manifolds are only listed here for referance purposes (some, by mistake, think the 914-6 GT used 906 manifolds, obviously not true as the 906 linkage configuration wouldn't work on the GT).