While this is not A-Body specific - it does give a brief but good insight into how a special car was built - The 1970 Plymouth Superbird.
This car was a special due to being a modified standard model, and the story gives a fairly good idea of the processes during the build.....even though there is at least one glaringly obvious flaw in the story down the page a bit that I only noticed a week ago when reading this again.....