I know how to tell on the the 5th gens but can't seem to find a pic or diagram for the 5.5 gens. I read a post that says all 5.5's have 2 rear o2 sensors. Seems to me like a dumb question but I think I am missing something and this has me stumped. Can anyone edumacate me on this?

 

All 5.5 gen Maximas are Cali spec.

 

Thanks...now it all makes sense to me. I was wondering how I ended up with a Cali car in CT.

 

I have a Cali spec 2000 in NY...