Anyone have experience with https://www.c2cfabrication.com/produ...12150830399563

Or have a preferred vendor for the under rear seat patch panels?

 

I ended up going with a full rear seat floor pan from Autobody Specialties.​​​​​​​

 

That looks good, and your faster than many body shops!

 

It's not in yet.
Just rough fitted. going to try to slip the front edge under the spot welds.
Not sure about the edges where the original floor is sandwiched.
My Buddy has been a big help. ( we're just a couple of rookies doing bodywork )
With luck, it will be in today.

 

Tacked in, used screws to tighten the gap managed to bend back the sides, and open a gap to slide the floor in between the braces.
My buddy did most of the grunt work (thanks Mike),
Need to do some more welding, and it may be a little overkill to get the pan inserted between the braces and the old floor.