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In your glove box is a parts ID that will show you your options-however you may need a Corvette Black book to tell what is what.(you may also find this info on line) For example
AAB......memory package
AG1.......power driver seat
AG2.......power passenger seat
...........etc
On the C3's the build sheet was put on the top of the gas tank. (along with a couple other places) Two months ago I checked for to see if by change this piece of paper was still there on my 74 L82/M21 and sure enough-after 34 years-a little weathered but still intact. Wow what a find!!!!