Coming close to starting up the new 383. My 02 sensors that are on there now, were put on with new headers along with heads and cam in my old motor.

Before I start up the 383, should I replace the 02's or wait till the headers burn off all the outer coating that kills the 02's? I dont want to keep having to replace them, but also its important to have them on and working when I start it up right?

The old motor wasn't running for long at all so I dont know if the headers are ok now.