Can someone please tell me if there are O2 sensors in the heads from Gen I lightnings or was there a Y pipe with a single O2. I'm just curious, because I found a set for sale that I'd like to put on a carbureted 351W, and I've been told the Lightnings were Windsors, but I don't know where the O2 sensor/s is/are...

thanks...

 

The o2 sensor is where the two pipes from the headers meet

 

Thank you very much!

 

no prob.