Hello my name is John, I have a 92 Prelude Si-R (proof) running a USDM OBD2 Non-VTEC H23 head on a OBD1 H23 bottom end. The problem I am facing now is I did not replace the oil pump from the old bottom end I swapped for the JDM one. All wiring is OBD2; I have a OBD1 to OBD2 jumper harness at the ECU. Does anyone know a trick to bypass the crank sensor without having to replace the oil pump in my block? Someone told me to use the OBD2a/b bypass trick but would it be able to work with the USDM head, or would I just have to swap distributor; and if so what kind? Thank for your time.