The transaxle location points are the most complex part of this car. It requires tons of measurements, nerves of steel and time. You get this wrong and the car will drive of track. The transaxles location points are tied to the rear seat flooring, wheel well and is many complex bends in the steel.
Heres the passenger side, most of it is rusted away but you get the idea of what it is supposed to look like. There are three levels of sub flooring to this.
Heres the driver side, and you can see the perimeter is worst for wear.
Here's the repair metal of the rusted corner.
This is how it looks with the floor section sitting in place.
Heres the transaxle perch frame being checked for fit.
From the bottom, heres the seat floor to transaxle perch relation. This get much more complex in a minute.
One side of all this is welded to the outer wall of the rear wheel well. As you can see that was rusted out too.
Once cut out, this is what was inside.
cleaned, etched and cavity waxed.
replacement panel made and set in place for fitting.
Now with the perimeter strong, it was time to move on to the bracing, sub flooring and reinforcement blocks.
What all that looks like from the bottom.
This is about half of the way through one side.