Welcome to USA1 Truck. Here you are going to find different specs and information on 1973- 1987 C and K Series Chevy and GMC Trucks. First step to a restoration before you buy Chevy Truck Parts should always know what you have. Here we are going to make it easy for you to find out your pickup's model, year, and trim package.. Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products.. Answers.com is the place to go to get the answers you need and to ask the questions you want.