CV conversion for R180?

I'm soooo tired of searching all of the Z sites without hard fast results. It seems that most questions get sidetracked with opinions or preferences and ultimately the original question never gets a viable answer. Okay, enuff of my ranting...

I have a 71 240Z with a 4.10 limited slip R180. I've climbed under the car and looked as well as rotating tires and counting driveshaft rotations. It is in excellent condition and I have no interest in swapping it out for a R200. One of my outer U-joints is failing and I would like to convert to a CV setup, if possible. I cannot find a viable step-by-step procedure to do this if one even exist. If not, the other option will hopefully be to use HD U-joints like those produced by CTM should the size required be produced. They are very expensive and used almost exclusively by the competition rock crawlers. These U-joints do not have bearings but are sleeved instead.

Bottom line, is there a doable CV swap that will allow me to keep my R180? Is so, could someone provide the vital information? Many thanks..