Ok, yes this is my first post on this forum. However, Ive been on and off reading threads for about a year. That and I just spent the last 2 days search every forum about this swap. I recently bought a friend of mines totalled 2000 Civic SI. Its a fully built and boosted 1.8 liter B16 (sleeved and bored for those confused ones). All this was running on an AEM EMS. I have a 90 CRX SI that I want to put all this into. Being the engine is already built and tuned on AEM, I wanna keep the OBD2 sensors/wiring harness/ECU. How would I go about doing this? How would I adapt the OBD2 Ecu and eng harness to the cabin obd0 harness? Im confused on the conversion harnesses the companies like Rywire sell. Does this soley allow a obd2 ecu with all obd0 hardware or is this the ticket for me. Any and all help would be greatly appreciated. I plan on time attacking this car in next years Redline Time Attack circuit and the d16a6 isnt going to do anything for me.