This is a bit of a late reply, but since its going into an early model Accord then the 1st gen B16a from Japan would be the easyist, since there would be less wiring required to the run the OBD 0 ECU.
However the later engines with the extra 10hp would be benficial for your heavier car, but would require hooking up extra O2 sensors etc to run the later OBD I or OBD II ECU's