Used the air hammer to remove some of the floor-pan and did some grinding of what was left. I was happy I went with the new air hammer as the feathered trigger really helped me to control it when working by the rocker:
Checking for fit:
After a little more trimming:
There is a curved lip that I still need to trim around the edges:
After another round of trimming (still need to trim the top part – Doesn’t look like I have much to work with on the right top portion:
See the lines for a rough estimate: