I certinaly would be leary of going back with Ford calipers (read: cheap calipers). I'd opt for an aftermarket set from a reputable company.
Who would that be? Baer? Don't make them. SSBC? Not either. How about Rabestos? They are rebuilt. What do they use as the core? Ford Calipers.
You might want to invest in some different calipers in your Ranger. Those are cheap too. IIRC, they are the same calipers as the Trac has. They use the same pad number.
Tom