from corvetteforum.com member 45ACP
" . . . Restoration Package for your Corvette from GM/Chevrolet! Call the Chevrolet Customer Assistance hotline at (800) 222-1020 or 810-696-4800. You will need to supply the VIN of the car. If your Vette was originally registered in Canada, you will have to call GM of Canada at (800) 263-3777. GM-Canda wants $40.00 plus tax for the restoration package, so try the US number first."
I got mine last year. The stuff I got
The young lady I spoke with last year didn't quite know what I was talking about when I requested the Restoration Package, but after a few seconds of keyboard clicking sounds she found it and walked me down through a list of questions (name, address, VIN, etc). She told me 6-8 weeks to deliver, but I remember it only being a week or so.
Yes, it is free. Free phone call, free restoration package, they even covered the postage.
All you have to do is call, answer a few questions, then go out by your mailbox and wait.