I think the Aero Coupe was the Dale Earnhardt edition.
The one with the bubble rear windshield.
If you get under the car and look on the axle from the trans end, there should be a stamp on the pass side tube about 6-8" from the 'chunk'.
I had to use a flapper/grinder to clean off the paint to look for the stamping.
And just like most all the GM's, it should be stated on the tag under the hood on the firewall. And it should be a 3.73 gear with the stock swaybar. I think for an SS it already had the hp suspension. I'm not sure if they called it "F-41" or not. If you can find a build sheet that would be great. It can be up ontop of the gas tank, behind the rear seat, under the springs or in a door..
Take a look at the 'N.M.C.O.A.' they should have all the info you would ever need for your new baby.
E