I am installing a D15B JDM into a 2000 Civic SI/EX (D16Y8) for a friend of mine. They were told that this engine would be a pretty much direct bolt in that you use the intake and exhaust from original engine and away you go. I pulled off intakes and noticed that the one has a chanel running above and the D15 block does not have that channel, so this concerned me right away. I called the company they got the engine from and he says just silicone the holes up... If someone could take a look at the image of both and verify this guy is telling the truth ands not in left feild that would be awesome.