The engine number that is used as your VIN in most states is on a raised boss behind the distributer. Take that number and call 1-800-222-1020 to request your restoration packet from GM. It'll be free to you. It'll have more usable info about your truck than you can believe including the location & decoding of numbers.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.