Your dash,............just maybe? When I stripped my Charger for the resto I found my build sheet under the front bucket a rather typical place, but when the dash was removed, taped on top of the clove box insert was another build sheet. Now here is the irony in this, the sheet taped to the clove box was not for my Charger ? Either the dash in my car was actually intended for another Charger on the production line or too perhaps someone over the years replaced the clovebox insert with one from another car? At any rate check it out, it may be on top of that insert and you will not see it by just looking under the dash ??