Manny don't give up I will call Dan and see if they stamped it any other place on the bus he doesn't have internet service now or he could tell us on the board.Have you checked inside the electrical panel under the drivers window I have seen them there before on the 05 models.Manny check for any 4 numbers starting with 79 or 80 Good luck Manny I have one more idea check the rear drive axle for numbers most of those have never been replaced and I can trace it from the rockwell serial number will take me awhile but it can be done.FWIW all Carolina Coach Line buses were renumbered to a 5 digit number instead of the normal 4 digits and 85 was the first 2 numbers
Clifford