992 is a Zone Inventory car. Many Pontiacs were built according to an order generated by PMD specs, then shipped to a specific zone storage lot, where a dealer could purchase the car straight from that inventory. Once the dealer purchased the car, it would be invoiced to them on that date.
If you have the PHS, in the upper right corner there should be a 3 character code, and my guess is that the code will be "PZA" or similar.
What kind of Pontiac is it, and are there a lot of options?
