I am hoping you guys can help figure out this dilema. My brother purchased a 69 Z/28 a few months ago. It has all the Z/28 markings. 4 leaf suspension, dual hanger exhaust, disc brakes, close ratio manual steering etc. It has original Lemans blue all over it. As you can see in the pictures it is a rusty rolling shell but the vin 9N5763XX matches the two hidden vins. The cowl tag seems correct in every way except the build date seems to be about 3 weeks after the vin. Can you tell if it looks like an original cowl tag or one that has been added or faked? It just seems strange that the color is correct and that someone would go to so much trouble to add this cowl tag on such a rusty, stripped project. He had the guy paint the cowl tag area before he purchased it to help see the x code better since he was buying it by photo only. It does not have the correct rear and of course motor and tranny are long gone. What do you think? Thanks!