392 in a 70 Duster

I hit some of the rustier floor spots with the wire wheel. I don't see any other places the rust has penetrated through, although I see some spots where the metal now has a rough texture. Should I be patching these spots?

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Something for you to think about. When I was at the point where you are, I didn't plan ahead. After I got all the floor pan work done, bought the new gas tank with the integral fuel pump, I decided to relocate the springs so I could mini tub the car for bigger tires, because I worried the 392 Gen3 would blow the tires off all the time. The result of relocating the springs meant the new tank interfered with the exhaust, and in the end to make it all work together I cut out the spare tire well, had to make a new gas tank, etc. I'm glad I did what I did, but I sure wish I would have given little more though to where I was going. Just saying ----