Where is Bank 1 Sensor 1 oxygen sensor for the 1999 3000GT mitisbishi?

In the 1999 Mitsubishi 3000GT, Bank 1 Sensor 1 oxygen sensor is located on the driver's side of the engine, upstream of the catalytic converter. It's positioned in the exhaust manifold or just after it, before the exhaust gases enter the catalytic converter. This sensor monitors the oxygen levels in the exhaust gases to help regulate the air-fuel mixture for optimal engine performance.