Got some garage time today. It was slow going, but some progress was made. Before moving to the cab corners, I decided to do an initial fitting of the replacement floor pan. Before doing that, I decided that I would get rid of whatever was covering the original floor. I was concerned, since the truck is so old, that the coating was red lead paint. So, with that in mind, I took to the removal as carefully as I could. I did all of the removal by hand, sanding and wiping the dust up with a wet paper towel. Lather, rinse repeat until the entire passenger side floor was as clean as I could get it. After that, I coated it with the rust reformer paint. After the paint was dry, I laid out cut lines for removing the rusted out parts. The cut lines are visible in the attached pic. Before doing the cutting, I did do that test fit. It's pretty close, but not exact, so some finessing will likely be required. Not a surprise, based on all of the other write ups that I've seen here. Anyway, just the first fitting. Plenty more of that to come.