98EJ7Y8

just dropped a y7-block with a y8 head in an hx from 98.. i wasnt able to hook up both o2 sensors and was wondering whats the deal and how to fix this ... also when i got my y8 harness the water temp plug (thermostat) was missing .. i got one a replaced it but wasnt sure of the pins and where they went .. when i turned the key over the temp gauge in the cluster was through the roof .. could it be that i got the two wires mixed up ?? and the o2 sensors on the y8 harness well theres only one plug on the harness cause if you area ll aware of the ej8 they have a plug for the rear sensor underneath the car .. how to fix .. PLEASE HELP !!!

98EJ7Y8

thanks for the help guys .. im gonna go with a p28 chipped ecu for o2 sensor delete .. and everything should be good after that .. i have a knock sensor hooked up and vtec hooked up .. not wired in .. special thanks to my y8 engine harness .. and a not so special thanks to my ecu ..