This is a very common question here (car history). If you look around, there are a number of threads on the topic, but the short answer is, the info probably can't be found.
Unless... The best source of information on your car may (and this is a big "IF") be on your car. The Build Sheet (also known as the tank sticker) was placed on virtually every one of these cars when they were built. They were glued to the top of the gas tank (hence, tank sticker) but some have reported them tucked away in other locations - behind the dash, inside seats, etc.
Most people, if they are able to reach the area, are not lucky enough to find this document, or find it in such poor shape that it's worthless.
I was fortunate enough to find mine, and while difficult to read, it did have all of the options listed, as well as the name and address of the dealer it was originally shipped to
The unfortunate truth of the matter is that either GM didn't keep good records during most of the C3 build timeframe, or the records were destroyed, or...???
Regardless, welcome to the site. Check the VIN decoder as mentioned by Mr ebo above, and if, by chance you find a build sheet, please share it with us and we'll be glad to help!
manget12011-07-12 05:39:33______________
I wanted a Corvette my whole life, but I never dreamed of all the wonderful people I would meet because of it!