We avoided disaster on our 5.2 Magnum build. ALWAYS inspect OOTB Heads !!!!
.... and the fact that this supplier states each head goes through a 25-point quality inspection ..... and about a full table spoon of casting sand comes out of EACH intake port of one head?? But here is the kicker: The other head had some casting sand as well, but not nearly the same amount but enough to cause damage - maybe a half teaspoon per intake port? One that got through ok, but two with this is garbage.