02 Sensor Locations

[Pigpen1204]

Hi there! Long time lurker, first time poster.
After doing a few searches and coming up empty handed, i need to ask those in the "know" where to find the O2 sensor on a 98 v6 Camaro. (m5 if it matters which im sure it doesnt).
From what i've gathered, the are supposed to be in the exhaust manifold. But, for the life of me, i cannot locate the little bastards. So i guess what im asking is, where EXACTLY on the manifold are the O2 sensors located?
Thanks in advance.
--Pigpen

[hockeyman]

Back/rear of both Exhaust Manifolds, near the firewall. Then two at the converter, one before, one aft. Four O2 Sensors alltogether.

[borispeed]

Is it the same for a 99?

[xcdarrel17]

On my 98 I only have 3 sensors, two in the manifolds and one post-cat sensor.

[slow6]

i dont have a pre-cat sensor either

[98Camaro3.8]

98+ don't have the pre-cat sensor. Everything else is the same.