Jake, are you looking for the block stiffener for an ISBe like in that photo or one for a standard B series? The one for a standard 4bt is part # 3929093. Must consider when you add that unit you will need 2 oil pan gaskets, 2 oil pickup gaskets, longer bolts, and add an extra 1/2 qt of oil. The one in your photo for the ISBe series engines is part # 3970102. That one only works on the ISBe 16 valve engines because their block has an extra set of holes to attach it inside the regular oil pan holes.