One of the positive side affects of focusing here on how the cars were built and not rules that change and often play catch up over time. We should realize that discussions and surveys like this have not been conducted in the hobby (that I'm aware of) in the past for many/most of these topics.
Hopefully we provide an unbiased discussions, enough original examples and data collection so that owners and builders can build they cars as they were and that the rules reflect that. Seen allot of changes and improvements over my 40 plus years
Thank you all that have contributed to this and other surveys - Now back to the focus
As a note we can expect that a fair amount of these may have been changed out - Too bad they weren't dated (the hinge)