1987 F150 exhaust
 

I want to take of my cat and my y-pipe and put on headers. the only problem is i got o2 sensors in my y-pipe and the front cat. what do i do about this???? I then want a header back exhaust that exits just before rear tires??? does anyone know exactally what im gonna need to get this done???? if possible could someone find the exact links of all parts nessesary?? any help would be great.....thanks guys

There should only be one O2 sensor. Just put that one one side of your exhaust. That will be close enough to keep the engine running right. Or for that matter, if you will be installing an H-pipe, you could put it in that. It's a heated sensor, so it's not critical that it be real close to the engine.