Angle floor panel replacement

[sjhark]

I'm replacing my rotted out angled floor panel. Can anyone tell me if there is a trick to removing the two side rivets to remove the panel? Do I need to remove the angle panel with the rear front seat riser as an assembly and then cut the rivets once I have it out? Are there any spot welds? I did find a couple on the edges where the angle panel and the seat riser meet. Thank you for any help!