Home made Hydraulic Clutch Setup

Didn't some of the 80's trucks use a hydraulic master/slave setup to get rid of the mechanical linkage?

If you look, there are several threads out there on fabbing a slave cylinder mount to a Mopar, I just don't have the links handy. This is the path I will be taking this summer. Not sure about the master yet but they aren't too expensive if you have to experiment.