Customs Patch panel id question - 49 Merc

Found in my friend's garage. I'm assuming the first ones are patch panels. He was building a 49 Merc. car. The second bunch are factory parts - again assuming Merc
Any help would be appreciated.

 

The bottom pic is Ford Tbird Galaxy style bucket seat side panels.

 

Thanks, that makes sense. He had some seats partially cut down to use in the Merc he was building. when he passed.
We ended using these 68 Mustang deluxe that I picked up for free. Far less work and they had the right look.

 

Still looking for help identifying the top patch panels. Thanks