From our past correspondence, there are too many things wrong with your truck for the dash plate to be right. IF it were correct the number 0525-21986 would be stamped in the left frame rail under the front fender. If that number is not there, the data plates have been switched. Based on the axles and fenders, I am confident that the real VIN is only be five or six digits long, and may start with M. It could be on either the left OR the right frame rail, either forward or behind the centerline of the front axle.
Take a look at the thread about Maccus's M34 restoration and you'll see a good photo of the right frame rail VIN location. Some of them even have the manufacturing date stamped near the VIN.
Regards,
David