BII's and Rangers used the same fenders and doors by year
1983-1988 used the same fender panels
1989-1992 were different
You can get new, unpainted, at LMC truck for $120:
https://www.lmctruck.com/1983-11-ford/body-panels/fr-1983-88-front-steel-body-parts
1983-1988 Doors could have Vent(wind wings) or no vent
1989-1992 Vents were not an option
Don't see new doors available
Good site to check for local parts in wrecking yards:
https://www.car-part.com/
1988
Ford Ranger
Door Front
USA
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There is often a picture, click on it and it will show ALL the pictures of that vehicle,maybe you will get lucky and find both parts in white
Although "white" is not the same in every year, lol