Drilled and slotted rotors were great 40 years ago when:
a. the binding material of the pads created large amounts of gases when heated (reason for drilling)
b. the pad material was prone to glazing (reason for slotting).
But unless you are running original pads in your Ranger, the pads you would but to don't glaze easily/don't off gas significantly. But everyone still thinks drilled and slotted rotors make your vehicle
look like it should stop like a Porsche.
From what I have read, carbon ceramic pads work great once they are up to temperature (day at track with sports car), but not so good in regular drive, especially not in winter (although Seattle temps are a little more moderate than Calgary ones in January).
The ultimate 4wd front end upgrade for TTB is Bronco/F-150 knuckles/hubs/rotor/caliper - technically, it is OEM, but changes truck to 5x5.5 pattern so might not be what OP was after.
Knuckles don't really "wear", so set off '95-97 Ranger/?'95? Explorer is considerable improvement over older ones, as the caliper both changed from single pot to dual pot and from caliper sliding on knuckle to sliding on bracket pins. Caliper not sliding on rusty knuckle dramatically reduces braking/increases pad wear.
The "wear" item on knuckles is the ball joints and you would want to replace those anyways. I suppose you could count knuckle rust as wear item, but those I have worked on haven't rusted significantly - cast iron survives better than sheet steel.
All the rest of the parts - spindles, hubs, bearings, caliper, etc are all replaceable with NOS (or aftermarket equivalents).
My 2¢ worth.