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For that information you have to go to Appendix J of the period to see what was allowed, and then what was actually done under those regulations in period. As a rule of thumb unless it was stated you could do it you cannot today.
In Appendix J for most of Period F for example make and type of shock absorber was free within the given provisos - mainly that the method of operation stays the same - so a telescopic hydraulic shock absorber could have been replaced by ANY telescopic shock absorber from that period. That is probably the biggest issue, period freedoms do not give total freedom today, only what was legally and provably done under those freedoms in period.
Appendix J always defines how a car could be run/modified/used beyond the actual homologation document. Appendix K today tries to summarise these period regulations and refines those concepts for modern use - in safety issues for example.
Last edited by Simon Hadfield; 20 Dec 2015 at 16:15.
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