Hydraulic Clutch on a '67-'72?

[TP from Cntl PA]

I've been having some on-going health issues which will never go away, and strength in my legs is a problem at times. Anyhow, I always prefered standard vehicles and don't want a slush box ever if I can help it, but I am running a 12" Borg and Beck style clutch in my '72 K-20 with SM465 and its getting harder and harder for me to push that pedal in. I was wonder if I could adapt a hydraulic clutch setup from another GM(Or other brand) to lower the pressure needed to clutch...............Anyone ever do such a thing on one of these trucks? I'd like to keep the SM465 for its low first, as it works slick on the farm............Or I'd drop a NV4500 in it and solve the problem.

Thanks