While it is great to hear that MAFCA is getting new members and are approaching a new record high, how does that compare to how many we are losing or members actually participating? Our local club has been steadily in decline, both in membership and participation, for a few years. If we don't...
A thermal imaging camera might pin point it for you. https://www.amazon.com/Raythink-Professional-Resolution-Ultra-Clear-Inspection/dp/B0G4MDN3LM/?tag=atomicindus08-20
Hundreds (thousands) of other Model As have their license plate located in front of the radiator, mine included, without issues. I wonder what makes yours ‘special’?
Re: “B” Grind Cam
I wouldn't use a Model B head, they use the 3 bolt water pump that is hard to get parts for. To answer your question, a Model B has a compression ratio of 4.6.
Since the original oil was a single grade and heavier than your GL-4 140, I would guess that your 140 should work OK tho I have never tried it.
That said, Steve Mitchell sez to use GL-5 85W-140 in his transmissions and O/D. Also sez NOT to use 600W from the vendors.
Most 'Moderns' use tempered glass in the side windows. easier to shatter and get out of car in an accident. You can not get out of a car with laminated glass. That is why laminated glass is mandated for windshields, so you don't go thru it.
I would look at safety above all other reasons.