Yes, I pass here in MO with no problems. We have no visual inspection but everything that was on the truck before I put the Bassani Y-pipe in went right back together in the same locations including 02 sensor and air injection tube. My 92 has only one 02 sensor fitted into a small cross pipe where the left and right exhaust pipes merge in the Y-pipe. This is the same location as the stock Y-pipe from Ford. What year is yours? I have never seen a Bronco with more than one 02 sensor but then never run across one with factory duals either.