LS6 window sticker

[starrider]

i purchased from a auction house which was advertised as an original LS6. The chevelle came with what was advertised as an original window sticker. I have had the car for a while and used it as a driver but have decided to sell it. I have not been able to locate a build sheet for it. I am hoping that someone here can tell me if this is a real window sticker. The pic shown is a copy of the one i have so the paper and size will be different. Thank you in advance