Thanks for the info, I am going to try and use the original setup from which the axle came from, the Mercury Montego Wagon 1976 3 link setup. The rear end is all ready to go as far as brackets- now- just to find an old Merc wagon with the control arms and a couple of angles to measure.
I can tell this is going to be reeeeel interesting figurin' out. Oh well, I'll get there.