Over the years I've spent researching, studying and working on 365 GTB/4s, a.k.a. Daytonas, I've come across at least 4-5 slightly different (from each other) design/style OEM thumb nuts for securing the air cleaner lids and relay board covers. Over the same period, I've bought 4-5 different (from each other) reproduction sets from various suppliers/vendors, but not a single one of the reproduction designs/styles matches any of what I believe to be OEM supplied ones ??? Are "they" not even trying make them exact or are there possibly more OEM designs that I just haven't ran across yet ?