ok i have a 97 civic dx with a y8 head swap on it.  what i need to know is the engine harness for a 97 civic dx has both oxygen sensor plugs on the same harness, does a 97 civic ex have the same or is there only one plug on the engine harness and then the other plug is on another harness and if so what one?  the only reason i ask is because the shop where i have my car is telling me this.  
thanks in advance