right now i have a 95 civic coupe configured to run a b16a (from a 99 si so i assume its OBDIIb) with b20 block (OBDIIa. The car is also currently equipped with the AEM EMS. No check engine lights or anything come on so i assume my harness is setup properly. I am interested to know what other kinds of blocks and heads i can use in my car without having to change wiring or engine mounts. B18A/B18B obdI block with 99 SI head? b18c OBDII block with 99 si head? b18c OBD II block and head? Is OBD dependent on the head or the block? Thanks.