Some more detailed photos of my Look HSC3 , it CAN come with a cane creek C2 cartridge bearing headset if needed and I made a variety of long spacers for it myself (I have a business that makes carbon epoxy items)
I have filed off the lawyer tabs years ago and the top of the alloy bung is 21mm below the top of the steerer (and seems fixed) the fork itself weighs 379g on my scales inc the alloy bung and the Look alloy topcap weighs 21g , there is also an unused cane creek topcap too, sorry if there are too many pics !