Near as I can tell from the Chassis Parts Catalog, ALL Rockne's, 75, 65 and 10 used the same bumpers, and they were not shared with any other Studebaker model.
If it helps, your engine water outlet would be Studebaker Part # 172416, also used on 1930 through 1933 Studebaker Models 54 and 55.
The hub cap is Studebaker Part # 175619 for wire wheels and used on ALL Rockne Models '32 and '33.
Why not post it on the SDC Forum? That's where the after WWII owners congregate, and it's VERY active. Except for RIGHT NOW. It appears to be down for maintenance.
I would check with Restoration Specialties in Windber, Pennsylvania for the window channel. And place a want ad in the Antique Studebaker Review for the Rockne emblem. Assume you mean the one that goes at the top of the grill?
https://www.restorationspecialties.com/
1932 1933
If you have a pump there are people who can rebuild it, with an online search.
If you do not have one I can't help. https://duckduckgo.com/?t=ffab&q=antique+water+pump+rebuilding+service&ia=web