Thanks, turbothrush.
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The upper grille block is pretty much ready for paint:
I hope I don't jinx the paint job by saying this, but it's looking more like a 3- or 5-foot job, not a 10-footer.
Lower block: I'm just tweaking its shape to fit the opening snugly. This weekend I'll decide on a way to mount it, and then it's on to finishing work for that piece.
I'm going to visit relatives tomorrow evening - a ~200 km (120 mi.) highway round trip. Both parts will be on the car for the journey, finished or not!
(Likely not.)