Here's who you need to send the info to:
cac@chevrolet.com
Here's the info you need to provide:
1. Your VIN
2. Mailing Address
3. Day and evening phone number

It's called a "restoration kit", and it's provided free of charge. The packet that's got the useful information is thin enough that you can photocopy it at work without the boss jumping down your throat.

or you can call
Chevrolet Customer Assistance Center at 800-222-1020. Customer Relationship Managers are available Monday through Friday from 8:00 a.m. to 11:00 p.m., Eastern Time.
i am told there is lots of usefull info in these kits but only one per person . i am accually on the phone now ordering for my 78 burb