Four link?

So I have been working on a 69 valiant and feel it is time to finish up the suspension. In the rear I have mini tubed the car and moved the leafs in. I found a narrowed rear to put in her but the narrowed rear is set up for the old school leaf link. If I am at it I would like to convert this to a four link or even the triangulated four link. I am set up with fuel cell so exhaust and fuel tank clearances are not a problem.

I found this forum via google search for triangulated rear with a tread by Mad Dart. I understand this fella has now done another car but with a four link system.

Stock frame rails mini tubed big block conversion with 74 duster K member.

Cheers Don.