Have you put those numbers through the
ID Plate decoder?
I can tell you that there's nothing in those numbers to suggest that the vehicle was a factory built customer order. Vehicles painted and specified for big customers (Army, PMG, Yellow Cabs etc) have an "S" trim number.
The 333 number means it was ordered from the factory with a glazed tailgate. There are very few panel vans around today that didn't have this option. Whether this was because they were unpopular or simply an accident waiting to happen is unknown
None of that explains the bonnet holes - perhaps someone else has seen that modification before and has a theory.
cheers
RET