need help with my 1997 z28 camaro

I just installed the 3in pacesetter headers and y-pipe, but I just noticed there are only 2 spots for the o2 sensors and there were originally 4 o2 sensors. what do I do here?

ty for the help.

 

The 97's had rear or downstream O2 sensors that will verify the "condition" of the cats They are not required for the car to run properly. You will have a CEL on though. You can have the downstream O2s tuned out of the PCM or have bungs welded in to add the rear o2s if you are in an area where emissions inspections are enforced.

 

ok man thanks for the help.