I unfortunately don't have the build sheet for #4915. However, I do have the invoice and window sticker. The invoice was prepared on 7/26/01 and the window sticker shows 7/26/01 on the bottom right. However, the driver side valve cover shows a date of 8/02/01 and the driver door jamb shows 8/01 on the label. Which of these dates would be more accurate? Any info would be appreciated.