The quality heavier Wagner brake rotors really helped.
(they didn't surface-rust after a little sitting either)
They weren't slotted or drilled, we're talking about a four door economy sedan from the mid-nineties, intentionally on the cheapest of the cheap organic pads.
The cheap rotor sets wore and readily warped with that Ford.
Regardless of what or how much lubricant, what end-boots I used, my slide mounts would seize between brake jobs.
I would tell mechanics and parts stores about it and the absolute universal response was, I 'should buy replacement calipers and sleeve/pin hardware.'
Knowing that any such replacement hardware would be far inferior to the well aged, used, OEM equipment that was already on there, I devised my own solution.
The hardware stores such as Lowes, carry 2" steel wire pipe cleaner brushes with handles on them. Hack-sawed off the handle, stuck in an A/C high speed plug-in drill, and proceeded to hone out the caliper slide mount bores. Took awhile to do each side adequately. Problems with seizing, ceased thereafter. Sold it with the OEM front brake hardware at over 327k.
Should the same problem be observed with this vehicle, I will take look to take the same steps toward a pseudo-permanent resolution. I only say "pseudo" because it will eventually be necessary to repeat the same process of cleaning up the slide mount bores. This could be three brake jobs later, instead of it seizing well within the period of the first brake job.