A friend has a set of disc spindle in jacksonvillle florida for sale, should fit ranchero's too" he was asking $100-125 range I was looking at them for my 68 cougar... his email is . jlbrownjr@bellsouth.net
spindles Forgot what there off of but will fit 68-73 mustangs I think they will fit70-72 ranchero's email him for more info.
sounds like they are off of an intermediate size Ford/Mercury-won't fit a full size '72,but will fit 67-'71 ranchero,torino,montego,mustang,cougar,fairlane,cyclone.It's a bolt on for most,some of the others will also need the outer tierod end.I've swapped alot of these, even mounting them on a '56 Ford,by reaming out the ball joint tapers to fit.(gave the car a 2" drop)