get an ex or si harness, and get an obd2-obd1 jumper and an obd1 ecu.
you can't use the gsr harness in your civic, and you'll have to rewire your ecu because the gsr has secondaries, and the fuel pump relay pin is different than on the civics.
best bet: 99-00 ex harness, obd2b-obd1 jumper, obd1 p72