Here is a shot of a full set of the interior parts (mid-49-53).
https://www.flickr.com/photos/advance-design_parts_co/11593840945/in/set-72157631868452754The center section and cover clips are reproduced ClassicParts.com carries it under part# 32-130, there may be others.
The u-shaped pieces I am not aware of reproductions, post an ad in the Swap Meet here. A caution on them, they have clips and pads to aid in spacing and to keep the vent area open if you get used they are often rotted or missing from condensation build-up so check.
The only SS inside the cab on window trim I have ever seen is on the side windows like this.
https://www.flickr.com/photos/advance-design_parts_co/8129182561/in/set-72157631867396207All windshield interior trim I have seen is painted. Most likely to avoid glare issues that SS would enable.
Early trim sets (47-mid 49) often have the more decorative cover clips, the corresponding u-trim has a tab extension for these to screw into. They will also fit if you can find them.
https://www.flickr.com/photos/advance-design_parts_co/8129177743/in/set-72157631867396207https://www.flickr.com/photos/advance-design_parts_co/8331300940/in/set-72157631867396207
