and the HUD was standard with the SSEi package unless it was a custom order delete
No I pretty sure that towards the end of the Bonnies days that they made HUD optional. It was around the same time they started making ABS optional on the previous gen Grand Prix. I could be wrong but I am pretty sure Im right. I know when the 2000+ gen Bonneville came out it was standard, then GM started cutting content out of most cars and making it optional. ex: lighted vanity mirrors on base cars, ABS.