I have a 94 gsr shell that is obd1 and a B18C1 motor out of a 2001 gsr which from what I read is supposed to be obd2b. So my question is what ecu am I supposed to use cuz the obd1 ecu will run the engine but I have no spedo readout or tach. I need this fixed asap. any likes to websites or personal knowledge is greatly appreciated thanks.