Here's a list of options codes I know of to date for each group.
http://www.chevellestuff.com/tech/trim_codes.htm
One thing to remember is not all assembly plants put these codes on the body plate - Atlanta, Framingham & Kansas City did, Baltimore, Fremont & Oshawa did not.
http://www.chevellestuff.com/tech/trim_codes.htm
One thing to remember is not all assembly plants put these codes on the body plate - Atlanta, Framingham & Kansas City did, Baltimore, Fremont & Oshawa did not.