I wish you lots of good luck on your project. You have more courage then I.
I actually had looked at a thief/recovery that was a lot worse then this one.
It had been laying in the mud, about 6" of it, for a couple of years before it was auctioned off for $7500.
In all honesty, the only salvageable piece was the ZF, maybe.
I'm sure that even the bottom 6" of the car were completely rotted out.
It had to be dragged up on the flatbed with a winch and parts were falling off of it as they did it.
Had it been stored correctly it would have been rebuildable.
I can't believe how stupid the recovery people were.
I thought it was worth $500. What do I know?