So as mentioned, Porsche played with the 928 headlights on the 930 in 1977.
DP Motorsport was using 914 mechanism, question is when did they start their 1st conversions ?
Now I’ll have to buy piles of old German car magazines to fulfill my curiosity about this period (not that I don’t already have a few).
Here’s the period magazine mentioned in the book for reference (as found on eBay) :
