The small front quarter panels where the headlights mount were in good condition on the original cab although they took quite a bit of drilling and cutting to get off. I'm pretty sure they are replacement panels.
After stripping and knocking out some minor dents there was one repair job to do.
The lug that bolts the panel to the grill bar was missing and the panel has been welded to the grill bar. It should look like this:
Then welded in place.