I have a 2000 Civic Si with B16 and I want to do a JDM B18C1 or JDM B18C5 swap. I've been searching but have not found any set in stone answers on. If I need the JDM ECUs (P73/PCT). Or will my B16 P2T ECU work? Do the plugs match up the same? I've also read about some immobilizer thing with the ignition. will this effect my car at all? Has anyone done this swap and if so what if any problems did you run into? or would it be more beneficial to just rebuild my head and do porting, cams, upgraded valve train, bigger valves etc. if so what the best way to tune my ecu thanks for any input I appreciate it.