In your build thread, you have a photo on the 1st page that shows your rear sway bar mounts welded to the floor.
Do you know what gauge steel that you used for this?
The reason I ask is that I bought my sway bars used and they didn't come with the original IPD plates. The guy threw a couple of pieces of 3/16" - 1/4" steel plate in the box when he shipped them.
Now, I'm not much of a welder, but I can get by. But, trying to emulate what you have done, with plates as thick as what I have, that is a recipe for some destroyed floor pans!
Let me know when you have a chance.