Early A floor pans

After seeing this post, I started looking closer at the rockauto floors and the ABS floors and you can clearly see the difference in quality. Just ordered front and rears today. Question, how to remove the pans? I have cutoff wheels and and sawzall. Both? Or is 1 better then the other? Or just do it and see what works best?
Cut off wheels are the best. Place the new floor pans in over the old floor and draw a line on the outline. I found that trimming from the new floor pans where they don’t exactly fit flush to the existing floor made for a better fit. Cut out the floor about a half inch below the line you traced out on the transmission tunnel and on the outside edges grind the spot welds. This will help everything come out cleaner. Here’s a pic of my removed floor:A5456F06-8774-4995-9BDF-4D8D54534F58.jpeg