Redneck, Understand that there are reasons why people around here are just naturally sceptical about stuff...and with good reason. There have been several people come on this site and talk of a car they just bought that is undocumented and/or questionable, saying that they "don't care what it actually is for sure because its a "keeper" or they "don't intend to ever sell it", etc... only to list the car for sale in the classified section of this same site a few weeks or months later, basing most if not all of the authenticity of their car on what people have said in a previous thread when they were simply congratulating the buyer on his purchase and giving their opinions based on a few outside pics. Now keep in mind I'm in NO WAY saying that I or anyone here thinks thats your intention, I'm just giving you a little background on why people like to know for sure if a car discussed here is legitmate or a clone regardless of what the owner's claimed future intentions with the car are going to be. The car looks really nice, and if its a real Z, you got a screaming deal, correct driveline or not... If it isn't a real Z, you still got a nice camaro for the money... If its not too much of a hassle for you, post some pictures of the stuff people want to see to make their own decisions about its legitimacy, and all questions should be answered.
btw, and just fyi... there were tons of repro parts available by 1990, so thats really not a good indicator of legitimacy either.