im doing a coversion on my 91 civic si from obd0 to obd1. i need a p28 pinot diagram. i need to hook up the ytec and the 4 wire o2. i have everything just not sure where the wires for both of those items come out of the ecu. please help me. i have found some diagrams but they are all for integra swaps and i have a zc/z6 motor. i would like to run vtec in it the right way. thank you.