Call PPG tech line and give them an old code and they can find a modern paint code that best matches. I did this years ago for Washington Blue and got something that was very close.
https://paintref.com/cgi-bin/colorcodedisplay.cgi?color=Dearborn%20BLue&tditzler=IM973&rows=50
I've seen it numerous times where stranded wire is only working by a few strands. It works and then it doesn't. It's usually hidden by the covering. Look for wires with a kink in them.
Facet and Airtex have been recommended on here. You would most likely need a pressure regulator too. Facet has some low pressure ones. https://www.aircraftspruce.com/catalog/eppages/facetpumps.php
My local Advance Auto has a large clearance display of Fram products. I never new they made some of the stuff. Filters (never used Fram anyway) 75% off. I bought a gal. of hydraulic fluid for $11. Fram is gone.
Scroll thru the images of this "51. There are some under hood shots with springs showing. May help. https://classics.autotrader.com/classic-cars/1951/ford/custom/102547059
You can still buy whitewall tire paint. Don't know what it will end up looking like. Just an option. https://www.rangerpaint.com/products/white-sidewall