As I was replacing the clutch master cylinder on my wife's '88 Jeep Cherokee 4.0, I was reminded how looney its clutch hydraulics are.
The master cylinder's pretty normal, but the slave cylinder . . . Gack!
This car has a ZF/Peugeot 5-speed -- actually a nice transmission, but the slave cylinder is inside the bellhousing, concentric with the transmission input shaft! What were the French smoking when they designed this? When the slave cylinder died a few years ago, I had to remove the transmission to change it. That's a big honkin' unit with the transfer case attached.
It's another design that works better in principle than in practice.