I've never understood these 'originality' debates but I can imagine how things went in the 60's and 70's inside an automotive production facility and I'm sure alot of these "rules" had major deviations due to everything from production part availability issues, misreading build orders to who's hung over on that shift or who misunderstood his supervisor that day. If some guy on the line grabbed the wrong damper, it probably ended up on the engine and stayed that way. The discussion is still very interesting, so please continue