I have a friend that needs a little help. He just purchased a 1987 Chevy 1 ton truck, and he needs a little help in finding some information about it. He was curious if any of the people on the board might happen to know the RPO (Regular Production Options) codes of a Chevrolet truck of that year. He has figured out some of them, but would like to find out the rest of them. If any of you guys know these, sharing your knowledge would be really helpful. Thanks in advance.