You're going to need the transmission, ECU, an alternator out of a 96+ integra, a 99si rear motor mount and the old fuel injectors that are in your D motor need to be placed in your new B motor. You are also going to need a conversion harness for your new ECU to plug into your existing wiring harness unless your motor came with an OBD II ECU. If that is the case then you will either have to do some modifications to your existing wiring harness or you can try to find a wiring harness that plugs into an OBDII ECU and an OBD I B16A SiRII assuming you ordered a JDM motor. I am also in the process of doing the same swap so if you have yours in let me know... I may need some info on wiring, if not feel free to post again and I can help you with any other questions you may have.