Can anyone give me any info about this Coach a 1992 Prevost XL VIN#2P9M33407N1001409
From the serial number it started life as a motorhome shell and it is a 1992 Prevost chassis. The year on the title or registration does not always match the chassis year, but in this case they agree. It is possible and legal for a converter to title a new coach as much as 4 years different than the chassis model year, but now the engine manufacturers are forcing the issue by starting the engine warranty after a certain amount of time.
For the rest of its history you might try contacting Prevost Car and seeing if they will share their service history of the coach and provide you with the build sheet which will show how it was equipped and who the converter was when it was delivered.