Not really a dumb question, several makes and model vehicles used to come out with a half year model so the answer to your question is that it is possibly a half year model, which tecknically makes it an 89. or you could have a door that was replaced due to an accident or heaven forbid I say the word could have been rusted and replaced. Hope this helps you out Bro. The vin # is always the correct one though so it is an 89
Thank you. With the sticker being on the door jamb itself and dated I can tell it is original. After inspecting it again the sticker actually says 1988.6 which I'm guessing makes it a mid year vehicle. I will follow your advice and continue to use the 1989 cold air intake. I recently replaced all the suspension with sn95 parts and boy does it make a difference.