OK.....my 96 should have 4 sensors correct???? one on each manifold.....pre cat and a post cat??..and I am seeing that your telling me to put it pre cat.....so that your reading both sides of the motor.....right???

 

That one would work, but honestly, so would either of the exhaust manifolds. You are using the stock programming so the A/F ratio will be the same on both banks. I would go with the easiest one of the three to access.