Depends on how far you want take defining "numbers matching". First (3) areas that come to mind are:
1) Side of engine block (stamped on a machined surface)
2) Side of transmission
3) Radiator core support
The last several digits of the VIN should be what you'll find in those areas. I believe it's the last (8) IIRC. There are more areas to verify as well. There are some folks around here that are experts at this. Hopefully one or some will chime in for further assistance.