Thank you for the comments. Yes, I remember the front wheel concept of the plate covering 5 un-used lug net studs. My GMC has, oddly, 10-hole rear wheels and 5 hole wheels on the front. Apparently from the factory and I'm told some of this occured that year when they were using up the last stock of front axles.

So the next thing I need to figure out is if my '49 GMC 10-hole rear wheels will fit the front of my '46 Chev.

Dennis