Blue C pillar panels - used

[1986F150Six]

https://www.ebay.com/itm/165083855968?hash=item266fc3bc60:g:4jwAAOSwUjZhSQyh

[Gary Lewis]

Those are in remarkably good shape!  Yes, they are expensive, but they are far, FAR better than what I've seen used.  Maybe well worth the money if you are doing a full restoration.

But they sure look blue rather than gray.  No problem though, they are easily painted.