hahaha, dont worry i dont care, the difference is not that much in the block alone, the deck height is taller on the b16b, the b16b has a crank girdle, larger main bearings, longer rods, and higher compression pistons. the crank is also fully balanced. the pistons and rods also have an anti friction coating. thats about it. im sure the oil pump and thermostat are different as well, but there more accessorys and not part of the block imo.