Info on true dual option(N10)
 

https://www.thirdgen.org/techbb2/sho...76#post1685576

basically, i'm looking for where the O2 is placed

N10 is the dual cat option, which is just two smaller cat verses one big one. the o2 sensor is still in the drivers side manifold.

The v8 cars had the 02 in the drivers side manifold (single or dual cat.) and, afaik, the v6 cars had the o2 sensor at the y-pipe union from the manifolds...

yeah, basically the reason I am looking for this info is because in california, you can do anything you want to after the cat. So if I can come up with enough information, then I might be able to get true duals. Granted, I know it would be much more worhty of my time if I had a V8, but anything is better than the "T-Pipe" I have now.