Dura-Ace 7400 freehub. I am the unfortunate owner of a few of these. The first two cogs are as rare as the Holy Grail, and necessary.

Uniglide only. The later 8-speed 7403 freehub is Hyperglide compatible, and can take up to 10 cogs. But no 11-tooth first cog.

These freehubs are even harder to find. The special tool to remove the 7400 series freehubs: maybe 1 in 100 shops will even know what you need here.

good luck.