Possible wrong y-pipe and O2 sensors

I have searched online and multiple auto shops for O2 sensors for my vehicle and cannot find any.

I seemed to notice that the O2 sensors on my Y-Pipe are similar to what the Discovery 2 uses.

So I am thinking that my Y-Pipe comes from a later year Discovery.

Would the O2 sensors from an later year (2000-2004) and the Y-Pipe be a problem at all for my 1997?