I have a stash of NOS Beautiful Dura Ace HP-7400 Headsets with 36.3 mm stack height, alloy cups, steel races & titanium-plated fork crown race with bearing retainers. British Threading 30.2 cups, 26.4 fork race.
http://sexyracebicycles.blogspot.com/
New in the box: $75.00 shipped in the USA/Canada. Add 7.00 for other International countries. Sale goes until December 10. Scott Davis, St. Anthony, Minnesota USA